Top Vídeos
From clueless yet adorable pandas to majestic eagles and powerful tigers, we have a wealth of incredible animals to choose from here at BBC Earth. Here are our favourite Asian animal moments.
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Planet Earth http://bit.ly/PlanetEarthPlaylist
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Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.
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Not quite old enough for a picnic, but definitely old enough to have some rough-and-tumble fun, these baby bears are learning all they can about the world through playful scuffles with one another.
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Planet Earth http://bit.ly/PlanetEarthPlaylist
Blue Planet http://bit.ly/BluePlanetPlaylist
Planet Earth II http://bit.ly/PlanetEarthIIPlaylist
Planet Dinosaur http://bit.ly/PlanetDinoPlaylist
Behind the scenes from Seven Worlds, One Planet Episode 5 'Europe'
Millions of years ago incredible forces ripped apart the Earth’s crust creating seven extraordinary continents. Seven Worlds, One Planet, narrated by Sir David Attenborough, will reveal how each distinct continent has shaped the unique animal life found there.
Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.
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A blanket of aquatic plants covering a river surface yields a watery surprise for a playful lion cub. Poetic scenes from CBBC series Little Big Cat.
The intimate and endearing stories of lion, leopard and cheetah cubs living in the Masai Mara in Kenya. Adapted from the Big Cat series, Little Big Cat brings all the drama and charm to a younger audience.
Little Big Cat tells the stories through the eyes of the lion, leopard and cheetah cubs living in the Masai Mara in Kenya. The show uses a friendly story teller to set the scene and introduce the subject of each particular show while the cubs are voiced by young African children.
Visit http://www.bbcearth.com for all the latest animal news and wildlife videos
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This Silverback gorilla causes the road to come to a standstill when his family needs to cross it. Subscribe to BBC Earth for more amazing animal videos - http://bit.ly/BBCEarthSub
Gorilla Family and Me:
Wildlife cameraman Gordon Buchanan ventures deep into the Congo to form an intimate relationship with the world's biggest gorilla. Grauer's gorillas are a beautiful yet little known giants living in the foothills of eastern Congo's Virunga volcanoes.
Watch more videos from BBC Earth:
Planet Earth http://bit.ly/PlanetEarthPlaylist
Blue Planet http://bit.ly/BluePlanetPlaylist
Planet Earth II http://bit.ly/PlanetEarthIIPlaylist
Planet Dinosaur http://bit.ly/PlanetDinoPlaylist
Check out the other two channels in our BBC Earth network:
BBC Earth Unplugged: http://bit.ly/BBCEarthUnplugged
BBC Earth Lab: http://bit.ly/BBCEarthLabYouTubeChannel
About BBC Earth:
The world is an amazing place full of stories, beauty and natural wonder. Explore the official BBC Earth YouTube channel and meet the animals and wildlife of your planet. Here you'll find 50 years worth of astounding, entertaining, thought-provoking and educational natural history documentaries. Dramatic, rare and wild nature doesn't get more exciting than this. Subscribe to be the first to view new animal documentary videos.
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You can also become part of the BBC Earth community on Facebook, Twitter and Instagram. Here you'll find the best natural history content from the web, exclusive videos and images and a thriving, vibrant community.
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This is a channel from BBC Studios who help fund new BBC programmes.
Enjoy the beautiful greens of mangroves, seagrasses and kelp forests as we take you on a journey through some of the prettiest green hues of our blue planet with this 10 hour loop. Subscribe: http://bit.ly/BBCEarthSub
#OurBluePlanet is a digital collaboration between BBC Earth and Ocean X Media with featured media from both companies. Join the conversation over on Twitter @OurBluePlanet.
Ocean X Media are a team of scientists, explorers and filmmakers driven to discover what lies beneath the waves and to document untold ocean stories. You can find out more here: http://www.oceanx.org
WATCH MORE:
New on Earth: https://bit.ly/2M3La96
Oceanscapes: https://bit.ly/2Hmd2kZ
Wild Thailand: https://bit.ly/2kR7lmh
Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder.
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These brave wombats scour the snowy slopes in search of something tasty to nibble on.
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Watch more:
Planet Earth http://bit.ly/PlanetEarthPlaylist
Blue Planet http://bit.ly/BluePlanetPlaylist
Planet Earth II http://bit.ly/PlanetEarthIIPlaylist
Planet Dinosaur http://bit.ly/PlanetDinoPlaylist
Seven Worlds, One Planet Episode 4 'Australia'
Millions of years ago incredible forces ripped apart the Earth’s crust creating seven extraordinary continents. Seven Worlds, One Planet, narrated by Sir David Attenborough, will reveal how each distinct continent has shaped the unique animal life found there.
Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.
Want to share your views with the team? Join our BBC Studios Voice: https://www.bbcstudiosvoice.com/register
This is a page from BBC Studios who help fund new BBC programmes. Service information and feedback: http://bbcworldwide.com/vod-fe....edback--contact-deta
Join this troop of Langur monkeys as they grieve the fallen. Doesn't matter if it's an animatronic Spy Monkey; it was still part of the family. Now scrub up, it's time for the funeral.
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Watch more:
Planet Earth http://bit.ly/PlanetEarthPlaylist
Blue Planet http://bit.ly/BluePlanetPlaylist
Planet Earth II http://bit.ly/PlanetEarthIIPlaylist
Planet Dinosaur http://bit.ly/PlanetDinoPlaylist
Spy In The Wild
To discover just how like us animals really are, animatronic spy creatures infiltrate the animal world to explore their complex emotions. Spy Pup makes friends with a wild dog pack to investigate their maternal love and has a dangerous encounter with lions and elephants. Baby Spy Crocs discover the extraordinary devotion of a mother crocodile and take a rollercoaster ride inside her mouth as she carries her babies to water. Spy Egret and Spy Tortoise are nearly trampled by elephants as they film a newborn baby sharing the love of his caring family. Spy Monkey meets a troop of over 120 unruly langurs and finds out how teenage monkeys comically practise babysitting skills. Spy Prairie Dog witnesses the most enthusiastic kissers in the animal world. Spy Chick discovers the extraordinary devotion of hornbills as a mother is imprisoned for the sake of her brood. In Antarctica, Spy Adelie Penguin becomes entangled in the penguins' turbulent love life as they fight to steal pebbles to impress a fussy female. On the savannah, giraffes are filmed for the first time paying homage to an old giraffe that recently passed away. Spy Bush Baby meets some curious chimpanzees, and Spy Tortoise is adopted by a five-year-old and is taken on a wild ride through the jungle canopy before coming down to earth with a bump. In a thought-provoking scene a chimpanzee shows empathy as he finds an abandoned wildcat kitten and adopts it as his pet.
Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.
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This is a page from BBC Studios who help fund new BBC programmes. Service information and feedback: http://bbcworldwide.com/vod-fe....edback--contact-deta
Check out BBC Earth on BBC online - http://www.bbc.com/earth/world
Scientists step back 145 million years to tell the story of 'Big Al', a complete skeleton of an adolescent Allorsaurus found in Wyoming in 1991. The story starts in the Atlantic coast of Portugal where the discovery of remarkable fossils of dinousaur egg shells shed light on how Big Al was born.
Fascinating clip from the BBC natural history programme Walking with Dinosaurs: The Ballad of Big Al.
Broadcast in 1999, Walking with Dinosaurs set out to create the most accurate portrayal of prehistoric animals ever seen on the screen. Combining fact and informed speculation with cutting-edge computer graphics and animatronics effects, the series took two years to make.
Visit http://www.bbcearth.com for all the latest animal news and wildlife videos and watch more high quality videos on the new BBC Earth YouTube channel
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Lyrics:
Walked in the cold air
Freezing breath on a window pane
Lying and waiting
A man in the dark in a picture frame
So mystic and soulful
A voice reaching out in a piercing cry
It stays with you until
The feeling has gone only you and I
It means nothing to me
This means nothing to me
Oh, Vienna
The music is weaving
Haunting notes, pizzicato strings
The rhythm is calling
Alone in the night as the daylight brings
A cool empty silence
The warmth of your hand and a cold grey sky
It fades to the distance
The image has gone only you and I
It means nothing to me
This means nothing to me
Oh, Vienna
This means nothing to me
This means nothing to me
Oh, Vienna
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Lyrics:
Standing on my own
It didn't mean that much to me
I thought I had it all
I didn't see the mystery
I stood the test of time
I took the step to find
Love's great adventure
I spoke a million words
They didn't mean that much to me
They rang around my head
Like empty tuneless harmonies
Love's great adventure mine
Lying side by side
It didn't mean that much to me
I started to enjoy
The poetry and symphonies
I took it in my stride
I hailed the Day i tried
Love's great adventure
A fool who couldn't see
It didn't mean that much to me
I couldn't understand
That's how the game is meant to be
Love's great adventure mine
Standing on my own
It didn't mean that much to me
I thought I had it all
I didn't see the mystery
I stood the test of time
I took the step to find
Love's great adventure
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Lyric:
If the stack is high against you
And the hammer's coming down
And the time that's yours lies heavy in your hands
Oh my sentimental friend
The fast much reach an end
Lying face down on the cold stone
And they give their all to you
But their all is slipping through your hands
Oh my sentimental friend
Your time will come again
One day where I didn't die a thousand times
Where I could satisfy this life of mine
One small day
One day where every hour could be a joy to me
And live a life the way it's meant to be
One small day
How many times has it turned against you
How many times will they walk away
How many times have you let depression win the fight
Oh my sentimental friend
We'll walk as one again
One day where I didn't die a thousand times
Where I could satisfy this life of mine
One small day
One day where every hour could be a joy to me
And live a life the way it's meant to be
One small day
How many times has it turned against you
How many times will they walk away
One day where I didn't die a thousand times
Where I could satisfy this life of mine
One day where every hour could be a joy to me
And live a life the way it's meant to be
One day where I wouldn't feel my senses die
Where nothing made me hang my head and cry
One day where I could see myself as others do
Where I could feel the strength of love at hand
One day where I didn't die a thousand times
Where I could satisfy this life of mine
One day where every hour could by a joy to me
And live a life the way it's meant to be
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Lyrics:
We came to dance
Making moves from a passion play
The ties that bind us just slip away.
We came to dance
The piper calls out a different rhyme
He cracks the whip and we step in time.
Standing as the parade goes passing by
I hear a voice around my cry.
Like the sound of a distant drums
Rejected and alone.
A heart without a home
Then someone said:
We came to dance
Making moves from a passion play...
We came to dance.
Waiting as the panic grips my hand
Hearing prose from high command
Like a million times before
No dignity or grace
It's the price and not the race
And someone said:
We came to dance
Making moves from a passion play...
We came to dance.
We came to dance
Making moves from a passion play
The ties that bind us just slip away.
Take what you can
They said take it while you may.
But keep in mind penalty fits the crime
And it deals no softened blow.
We came to dance
Making moves from a passion play...
We came to dance
Making moves from a passion play...
We came to dance
Making moves from a passion play...
Music video by Ultravox performing The Voice (2009 Digital Remaster).
http://vevo.ly/s6WVx4
Support Deep Look on Patreon!! https://www.patreon.com/deeplook
? 2017 WEBBY PEOPLE'S VOICE WINNER ? for Best Science & Education Video ? !
http://webbyawards.com/winners..../2017/film-video/gen
Seen up close, the anatomy of a mosquito bite is terrifying. The most dangerous animal in the world uses six needle-like mouthparts to saw into our skin, tap a blood vessel and sometimes leave a dangerous parting gift.
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DEEP LOOK is a ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. Explore big scientific mysteries by going incredibly small.
Scientists have discovered that the mosquito’s mouth, called a proboscis isn’t just one tiny spear. It’s a sophisticated system of thin needles, each of which pierces the skin, finds blood vessels and makes it easy for mosquitoes to suck blood out of them.
Male mosquitoes don’t bite us, but when a female mosquito pierces the skin, a flexible lip-like sheath called the labium scrolls up and stays outside as she pushes in six needle-like parts that scientists refer to as stylets.
Two of these needles, called maxillae, have tiny teeth. The mosquito uses them to saw through the skin. They’re so sharp you can barely feel the mosquito biting you.
“They’re like drill bits,” said University of California, Davis, biochemist Walter Leal.
Another set of needles, the mandibles, hold tissues apart while the mosquito works.
Then the sharp-tipped labrum needle probes under the skin, piercing a vessel and sucking blood from it.
The sixth needle – called the hypopharynx – drools saliva into us, and delivers chemicals that keep our blood flowing. Mosquito saliva also makes our blood vessels dilate, blocks our immune response and lubricates the proboscis. It causes us to develop itchy welts, and serves as a conduit for dangerous viruses and parasites.
---+ Read the entire article on KQED Science:
http://ww2.kqed.org/science/20....16/06/07/how-mosquit
---+ What is the deadliest animal in the world?
Mosquitoes are the deadliest animals in the world to us humans. The diseases they transmit kill hundreds of thousands of people each year.
---+ How many people get malaria each year?
In 2015, malaria, the deadliest mosquito-borne disease, killed roughly 635,000 people, mostly children under the age of five and pregnant women in sub-Saharan Africa.
---+ What diseases do mosquitoes transmit?
Malaria, dengue, yellow fever, West Nile and Zika are some of the diseases that mosquitoes transmit.
Dengue fever, transmitted Aedes aegypti mosquitoes, is estimated to make almost 400 million people sick with jabbing joint pain each year.
Scientists also believe that Aedes aegypti mosquitoes are the main culprit for more than 350 confirmed cases of congenital malformations associated with the Zika virus in the northeastern Brazilian state of Pernambuco. Since last October, an unusually high number of babies have been born there with small heads and a host of health problems like convulsions, suspected of being caused by a Zika virus infection early in their mother’s pregnancy.
---+ What diseases can I get from mosquitoes in the United States?
West Nile virus is the most important of several mosquito-transmitted viruses now native to the U.S., according to the Centers for Disease Control.
---+ More Great Deep Look episodes:
The Bombardier Beetle And Its Crazy Chemical Cannon
https://youtu.be/BWwgLS5tK80
--- See also this new Zika video from PBS Digital Studios:
Should You Be Worried About Zika? | It's Okay to Be Smart
https://www.youtube.com/watch?v=rZ9S_3RFBgc
---+ About KQED
KQED, an NPR and PBS affiliate in San Francisco, CA, serves Northern California and beyond with a public-supported alternative to commercial TV, Radio and web media.
Funding for Deep Look is provided in part by PBS Digital Studios and the John S. and James L. Knight Foundation. Deep Look is a project of KQED Science, which is also supported by HopeLab, the David B. Gold Foundation, the S. D. Bechtel, Jr. Foundation, the Dirk and Charlene Kabcenell Foundation, the Vadasz Family Foundation, the Gordon and Betty Moore Foundation, the Smart Family Foundation and the members of KQED.
--
Video of mosquito labrum probing under mouse skin from:
Choumet V, Attout T, Chartier L, Khun H, Sautereau J, et al. (2012) Visualizing Non Infectious and Infectious Anopheles gambiae Blood Feedings in Naïve and Saliva-Immunized Mice. PLoS ONE 7(12): e50464. doi:10.1371/journal.pone.0050464 .
Used under the terms of: http://creativecommons.org/licenses/by/4.0/
Animations based on drawing in Choo Y-M, Buss GK, Tan K and Leal WS (2015) Multitasking roles of mosquito labrum in oviposition and blood feeding. Front. Physiol. 6:306. doi: 10.3389/fphys.2015.00306
Used under the terms of: http://creativecommons.org/licenses/by/4.0/
#deeplook #mosquito #mosquitobite
Argentine ants are spreading across the globe, eliminating local ants with their take-no-prisoners tactics: invade, dismember, repeat. But this ruthless killer seems to have met its match in the winter ant, a California native with a formidable secret weapon.
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DEEP LOOK is a ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our visible world. Get a new perspective on our place in the universe. Explore big scientific mysteries by going incredibly small.
* NEW VIDEOS EVERY OTHER TUESDAY! *
--- About Argentine Ants and Winter Ants
For about 200 years, the Argentine ant expansion story has been the slow-moving train wreck of myrmecology, the study of ants.
Wherever they go, Argentine ants eliminate the competition with a take-no-prisoners approach. Invade, attack, dismember, consume. Repeat. The basic wisdom among ant scientists is that if you see Argentines, it’s already too late.
As early as the 1970s, scientists began to notice a peculiar fact about the Argentine ant. Usually, when ants from different colonies are put together, even from the same species, they fight. But Argentine worker ants can be combined from colonies in Spain, Japan and California, and they will recognize each other — they won’t fight.
Without this natural check, researchers say, a single colony of ants from Argentina has spread across continents and oceans.
But Jasper Ridge near Stanford is different. In 1993, ant biologist Deborah Gordon’s laboratory began tracking ant populations there. Jasper Ridge was unconquered territory for the Argentines, but they already had been spotted.
The Ph.D students conducting field research began to notice one species of native ant was holding its own inside the boundary of the Argentine advance. What, the Stanford researchers wondered, was different here?
In 2008, students in Gordon’s invasion ecology class studying the ants claimed to have made a novel discovery. The students watched the winter ants wave their abdomens at their enemies, known as “gaster-flagging” in ant circles, before a cloudy liquid blob appeared at the tip.
Approaching the secretion sent the Argentines reeling away. Touching it could kill them. Over the next two years, the students repeated and studied the winter ant’s apparently novel defensive behavior. They also analyzed the secretion. (Turns out it comes from the same gland used by the ants’ ancestors, wasps, to sting.)
They confirmed that in fact, with this amazing defense, the preserve’s winter ants were not only surviving, they’re now pushing back, opening up space for other native ant populations to rebound.
--- Do Argentine ants bite?
Not people. Too small to hurt a human, they’re far more dangerous to their competitors, from other ants about their size to some small birds(!).
--- How do you kill Argentine ants?
Pest control companies usually recommend slow-acting, fat or protein-based bait that allows the workers to carry the poison back to the nest.
--- Why are winter ants called that?
In areas where temperatures dip below freezing, winter ants remain active while most ant species hibernate.
---+ Read the entire article on KQED Science:
http://ww2.kqed.org/science/20....16/05/03/winter-is-c
---+ For more information:
Gordon Lab’s at Stanford University: http://web.stanford.edu/~dmgordon/
Neil Tsutsui Lab’s at Berkeley: https://ourenvironment.berkele....y.edu/people/neil-ts
---+ More Great Deep Look episodes:
The Bombardier Beetle And Its Crazy Chemical Cannon https://www.youtube.com/watch?v=BWwgLS5tK80
The Ladybug Love-In: A Valentine's Special | Deep Look
https://www.youtube.com/watch?v=c-Z6xRexbIU
---+ More great videos and documentaries from PBS Digital Studios!
Space Time: Nucleosynthesis
https://www.youtube.com/watch?v=6yLGeviU8FM
Gross Science: Could We Rid The World Of Mosquitoes?
https://www.youtube.com/watch?v=rNEPTxWNadg
---+ About KQED
KQED, an NPR and PBS affiliate based in San Francisco, serves the people of Northern California and beyond with a public-supported alternative to commercial media. Home to one of the most listened-to public radio station in the nation, and one of the highest-rated public television services, KQED is also a leader and innovator in interactive media and technology, taking people of all ages on journeys of exploration — exposing them to new people, places and ideas.
Funding for Deep Look is provided in part by PBS Digital Studios and the John S. and James L. Knight Foundation. Deep Look is a project of KQED Science, which is also supported by HopeLab, the David B. Gold Foundation, the S. D. Bechtel, Jr. Foundation, the Dirk and Charlene Kabcenell Foundation, the Vadasz Family Foundation, the Gordon and Betty Moore Foundation, the Smart Family Foundation and the members of KQED.
#deeplook
Plenty of animals build their homes in oak trees. But some very teeny, tricky wasps make the tree do all the work. And each miniature mansion the trees build for the wasps' larvae is weirder and more flamboyant than the next.
SUBSCRIBE to Deep Look! http://goo.gl/8NwXqt
DEEP LOOK: a ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our visible world. Get a new perspective on our place in the universe and meet extraordinary new friends. Explore big scientific mysteries by going incredibly small.
* NEW VIDEOS EVERY OTHER TUESDAY! *
“What nerve!” you might say. What… gall! And you’d be right. The wasps are called gall-inducers.
---+ What do oak galls look like?
If you’ve ever spent a Summer or Fall around oak trees – such as the stalwart Valley Oak – Quercus lobata, or the stately Blue Oak, Quercus douglasii – you may be familiar with the large, vaguely fruity-looking objects clinging to the branches and leaves. Commonly called oak apples, these growths are the last thing you’d want to put in your mouth. They are intensely bitter, loaded with tannin compounds – the same compounds that in modest amounts give red wine its pleasant dryness, and tea its refreshing earthy tang.
That said, the oak apple’s powerful astringency has been prized for millennia. Tanning leather, making ink or dye, and cleaning wounds have been but a few of the gall’s historical uses.
But on closer inspection of these oaks – and many other plants and trees such as willows, alders, manzanitas, or pines – you can find a rogue’s gallery of smaller galls. Carefully peeking under leaves, along the stems and branches, or around the flower buds and acorns will likely lead you to unexpected finds. Smooth ones. Spiky ones. Long skinny ones, flat ones, lumpy, boxy ones. From the size of a golf ball down to that of a poppy seed. These structures wear shades of yellow, green, brown, purple, pink and red – and sometimes all of the above. A single tree may be host to dozens of types of gall, each one caused by a specific organism. And their shapes range from the sublime to the downright creepy. One tree may be encrusted with them, like a Christmas tree laden with ornaments and tinsel; and the next tree over may be almost completely free of galls. Why? It’s a mystery.
---+ How do oak galls form?
Galls are generally formed when an insect, or its larvae, introduce chemicals into a specific location, to push the plant’s growth hormones into overdrive. This can result in a great profusion of normal cells, increased size of existing cells, or the alteration of entire plant structures into new, alien forms.
Lots of creatures cause them; midges, mites, aphids, flies, even bacteria and viruses. But the undisputed champs are a big family of little wasps called Cynipids– rarely exceeding the size of a mosquito, a quarter of an inch in length.
“These tiny wasps cannot sting,” says Dr. Kathy Schick, Assistant Specialist/Curatorial Assistant at the Essig Museum of Entomology at UC Berkeley. “Gall-inducers are fascinating in that they are very specialized to their organ of the host plant.”
---+ What are oak galls?
These wasp houses are not homes exactly, but more akin to nurseries. The galls serve as an ideal environment for wasp larvae, whether it is a single offspring, or dozens. The tree is tricked into generating outsize amounts of soft, pillowy tissue inside each gall, on which the larvae gladly gorge themselves as they grow.
Full article: http://blogs.kqed.org/science/....2014/11/18/what-gall
---+ See more great videos and documentaries from the PBS Digital Studios!
It's Okay to Be Smart: Inside the World of Fire Ants!
https://youtu.be/rz3UdLEWQ60
Gross Science: Can Spider Venom Cure Erectile Dysfunction?
https://youtu.be/5i9X8h17VNM
---+ More Great Deep Look episodes:
These Lizards Have Been Playing Rock-Paper-Scissors for 15 Million Years
https://youtu.be/rafdHxBwIbQ
Stinging Scorpion vs. Pain-Defying Mouse
https://youtu.be/w-K_YtWqMro
---+ Follow KQED Science:
KQED Science: http://www.kqed.org/science
Tumblr: http://kqedscience.tumblr.com
Twitter: https://www.twitter.com/kqedscience
---+ About KQED
KQED, an NPR and PBS affiliate in San Francisco, CA, serves Northern California and beyond with a public-supported alternative to commercial TV, Radio and web media.
Funding for Deep Look is provided in part by PBS Digital Studios and the John S. and James L. Knight Foundation. Deep Look is a project of KQED Science, which is also supported by HopeLab, the David B. Gold Foundation, the S. D. Bechtel, Jr. Foundation, the Dirk and Charlene Kabcenell Foundation, the Vadasz Family Foundation, the Gordon and Betty Moore Foundation, the Smart Family Foundation and the members of KQED.
#deeplook
Their skeletons are prized by beachcombers, but sand dollars look way different in their lives beneath the waves. Covered in thousands of purple spines, they have a bizarre diet that helps them exploit the turbulent waters of the sandy sea floor.
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DEEP LOOK is a ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our visible world. Explore big scientific mysteries by going incredibly small.
Pristine white sand dollars have long been the souvenir to commemorate a successful day at the beach. But most people who pick them up don’t realize that they’ve collected the skeleton of an animal, washed up at the end of a long life.
As it turns out, scientists say there’s a lot to be said about a sand dollar’s life. That skeleton -- also known as a test -- is really a tool, a remarkable feat of engineering that allows sand dollars to thrive on the shifting bottom of the sandy seafloor, an environment that most other sea creatures find inhospitable.
“They've done something really amazing and different,” said Rich Mooi, a researcher with the California Academy of Sciences in San Francisco. “They’re a pile of novelties, and they’ve gone way off the deep end in modifying their bodies to adapt to where they live.”
Mooi studies echinoderms, a word that roughly translates to “hedgehog skin.” It’s an aptly-fitting name for a group that includes sea urchins, sand dollars, sea stars and sea cucumbers. But Mooi says sand dollars really have his heart, in part because of their incredible adaptations.
--- What are sand dollars?
Sand dollars belong to a group of animals called Echinoderms that includes some more familiar animals like starfish and sea urchins. Sand dollars are actually a type of flattened sea urchin with miniaturized spines and tube feet more suited to sandy seafloors.
--- What do sand dollars eat?
Sand dollars consume sand but they get actual nutrition from the layer of algae and bacteria that coat the grains, not the sand itself.
--- Are sand dollars alive? Why do they Turn White?
When sand dollars are alive, they are covered in tiny tube feet and spines that make them appear like fuzzy discs. When they die, they lose their spines and tube feet exposing their white skeleton that scientists call a test. That skeleton is typically what people find on the beach.
---+ Read the entire article on KQED Science:
https://www.kqed.org/science/1....932072/a-sand-dollar
---+ For more information:
Learn more about Chris Lowe’s work with plankton including sand dollars and their relatives
http://lowe.stanford.edu/
Rich Mooi’s research into sand dollars for California Academy of Sciences
https://www.calacademy.org/lea....rn-explore/science-h
---+ More Great Deep Look episodes:
The Amazing Life of Sand | Deep Look
https://youtu.be/VkrQ9QuKprE
For Pacific Mole Crabs It's Dig or Die | Deep Look
https://youtu.be/tfoYD8pAsMw
This Adorable Sea Slug is a Sneaky Little Thief | Deep Look
https://www.youtube.com/watch?v=KLVfWKxtfow&t=112s
---+ See some great videos and documentaries from PBS Digital Studios!
These Tiny Cells Shape Your Life | BrainCraft
https://www.youtube.com/watch?v=fnx-Qvx_fA8
What are Eye Boogers? | Reactions
https://www.youtube.com/watch?v=w3M8p-QCC7I
---+ Follow KQED Science:
KQED Science: http://www.kqed.org/science
Tumblr: http://kqedscience.tumblr.com
Twitter: https://www.twitter.com/kqedscience
---+ About KQED
KQED, an NPR and PBS affiliate in San Francisco, CA, serves Northern California and beyond with a public-supported alternative to commercial TV, Radio and web media.
Funding for Deep Look is provided in part by PBS Digital Studios. Deep Look is a project of KQED Science, which is supported by the Templeton Religion Trust and the Templeton World Charity Foundation, the S. D. Bechtel, Jr. Foundation, the Dirk and Charlene Kabcenell Foundation, the Vadasz Family Foundation, the Gordon and Betty Moore Foundation, the Fuhs Family Foundation Fund and the members of KQED.
---+ SHOUT OUTS
Here are the winners from our episode image quiz posted in our channel Community Tab:
https://www.youtube.com/channe....l/UC-3SbfTPJsL8fJAPK
?#1: Tektyx
Was the first to correctly ID the creature in our episode was a sand dollar.
?#2: tichu7
Was the first to ID what kind of sand dollar it was, the Pacific sand dollar.
?#3: Miguel Gomez
Also posted what kind of sand dollar it was was, but by another name: Eccentric sand dollar.
?#4: Gir Gremlin
The first viewer to identify the sand dollar by its scientific name: Dendraster excentricus!
It's stealth, not speed that makes owls such exceptional hunters. Zoom way in on their phenomenal feathers to see what makes them whisper-quiet.
SUBSCRIBE to Deep Look! http://goo.gl/8NwXqt
DEEP LOOK: a new ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our visible world. Get a new perspective on our place in the universe and meet extraordinary new friends. Explore big scientific mysteries by going incredibly small.
--- How do owls hunt silently?
When birds flap their wings it creates turbulences in the air as it rushes over their wings. In general, the larger a bird is and the faster it flies, the larger the turbulence created and that means more sound.
The feathers at the leading edge of an owl’s wings have an unusual serrated appearance, referred to as a comb or fringe. The tiny hooked projections stick out and break up the wind as it flows over the owl’s wings reducing the size and sound of the turbulences.
Owl feathers go one step further to control sound. When viewed up-close, owl feathers appear velvety. The furry texture absorbs and dampens sound like a sound blanket. It also allows the feathers to quietly slide past each other in flight, reducing rusting sounds.
--- Why do owls hunt at night?
Owls belong to a group called raptors which also so includes with hawks, eagles and falcons. Most of these birds of prey hunt during the day and rely on. But unlike most other raptors, the roughly 200 species of owl are generally nocturnal while others are crepuscular, meaning that they’re active around dawn and dusk.
They have extremely powerful low-light vision, and finely tuned hearing which allows them to locate the source of even the smallest sound. Owls simply hide and wait for their prey to betray its own location. As ambush hunters, owls tend to rely on surprise more often than their ability to give chase.
--- Why do owls hoot?
With Halloween around the corner, you might have noticed a familiar sound in the night. It’s mating season for owls and the sound of their hooting fills the darkness.
According to Chris Clark, an an assistant professor of biology at UC Riverside,, “The reason why owls are getting ready to breed right now in the late fall is because they breed earlier than most birds. The bigger the bird the longer it takes for them to incubate their eggs and for the nestlings to hatch out and or the fledglings to leave the nest. Owls try to breed really early because they want their babies to be leaving the nest and practicing hunting right when there are lots of baby animals around like baby rabbits that are easy prey.”
--- More great DEEP LOOK episodes:
Halloween Special: Watch Flesh-Eating Beetles Strip Bodies to the Bone
https://www.youtube.com/watch?v=Np0hJGKrIWg
What Happens When You Put a Hummingbird in a Wind Tunnel?
https://www.youtube.com/watch?v=JyqY64ovjfY
You're Not Hallucinating. That's Just Squid Skin.
https://www.youtube.com/watch?v=0wtLrlIKvJE
--- Super videos from the PBS Digital Studios Network!
Did Dinosaurs Really Go Extinct? - It's Okay to be Smart
https://www.youtube.com/watch?v=3_RLz0whDv4
The Surprising Ways Death Shapes Our Lives - BrainCraft
https://www.youtube.com/watch?v=Joalg73L_gw
Crazy pool vortex - Physics Girl
https://www.youtube.com/watch?v=pnbJEg9r1o8
--- More KQED SCIENCE:
Tumblr: http://kqedscience.tumblr.com
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KQED Science: http://www.kqed.org/science
Funding for Deep Look is provided in part by PBS Digital Studios and the John S. and James L. Knight Foundation. Deep Look is a project of KQED Science, which is supported by HopeLab, The David B. Gold Foundation; S. D. Bechtel, Jr. Foundation; The Dirk and Charlene Kabcenell Foundation; The Vadasz Family Foundation; Smart Family Foundation and the members of KQED.
#deeplook
With their big heads and beady black eyes, Jerusalem crickets aren't winning any beauty contests. But that doesn't stop them from finding mates. They use their bulbous bellies to serenade each other with some furious drumming.
Support Deep Look on Patreon! https://www.patreon.com/deeplook
Come join us on our Deep Look Communty Tab: https://www.youtube.com/user/K....QEDDeepLook/communit
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DEEP LOOK is an ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our visible world. Explore big scientific mysteries by going incredibly small.
Potato Bug. Child of the Earth. Old Bald-Headed Man. Skull Insects. Devil’s Baby. Spawn of Satan. There’s a fairly long list of imaginative nicknames that refer to Jerusalem crickets, those six-legged insects with eerily humanlike faces and prominent striped abdomens. And they can get quite large, too: Some measure over 3 inches long and weigh more than a mouse, so they can be quite unnerving if you see them crawling around in your backyard in summertime.
One individual who finds them compelling, and not creepy, has been studying Jerusalem crickets for over 40 years: David Weissman, a research associate in entomology affiliated with the California Academy of Sciences in San Francisco. He’s now considered the world’s foremost expert, since no one else has been as captivated or singlemindedly devoted to learning more about them.
While much of their general behavior is still not widely understood, Jerusalem crickets typically live solitary lives underground. They’ll emerge at night to scavenge for roots, tubers and smaller insects for their meals. And it’s also when they come out to serenade potential partners with a musical ritual: To attract a mate, adult crickets use their abdomens to drum the ground and generate low-frequency sound waves.
If a male begins drumming and a female senses the vibrations, she’ll respond with a longer drumming sequence so that he’ll have enough time to track her down. The drumming can vary between one beat every other second up to 40 beats per second.
---+ Read the entire article on KQED Science:
https://www.kqed.org/science/1....932923/jerusalem-cri
---+ For more information:
JERUSALEM! CRICKET? (Orthoptera: Stenopelmatidae: Stenopelmatus); Origins of a Common Name https://goo.gl/Y49GAK
---+ More Great Deep Look episodes:
The House Centipede is Fast, Furious, and Just So Extra | Deep Look
https://youtu.be/q2RtbP1d7Kg
Roly Polies Came From the Sea to Conquer the Earth | Deep Look
https://youtu.be/sj8pFX9SOXE
Turret Spiders Launch Sneak Attacks From Tiny Towers | Deep Look
https://youtu.be/9bEjYunwByw
---+ Shoutout!
?Congratulations ? to Piss Dog, Trent Geer, Mario Stankovski, Jelani Shillingford,
and Chaddydaddy who were the first to correctly 3 the species of Jerusalem Cricket relatives of the Stenopelmatoidea superfamily in our episode, over at the Deep Look Community Tab:
https://www.youtube.com/channe....l/UC-3SbfTPJsL8fJAPK
(hat tip to Antonio Garcia, who shared 3 full species names)
---+ Follow KQED Science and Deep Look:
Instagram: https://www.instagram.com/kqedscience/
Twitter: https://www.twitter.com/kqedscience
KQED Science on kqed.org: http://www.kqed.org/science
Facebook Watch: https://www.facebook.com/DeepLookPBS/
Patreon: https://www.patreon.com/deeplook
---+ About KQED
KQED, an NPR and PBS affiliate in San Francisco, CA, serves Northern California and beyond with a public-supported alternative to commercial TV, Radio and web media.
Funding for Deep Look is provided in part by PBS Digital Studios. Deep Look is a project of KQED Science, which is also supported by the National Science Foundation, the Templeton Religion Trust, the Templeton World Charity Foundation, the S. D. Bechtel, Jr. Foundation, the Dirk and Charlene Kabcenell Foundation, the Vadasz Family Foundation, the Gordon and Betty Moore Foundation, the Fuhs Family Foundation and the members of KQED. #deeplook #jerusalemcrickets #wildlife
When predators attack, daddy longlegs deliberately release their limbs to escape. They can drop up to three and still get by just fine.
SUBSCRIBE to Deep Look! http://goo.gl/8NwXqt
DEEP LOOK: a new ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our visible world. Get a new perspective on our place in the universe and meet extraordinary new friends. Explore big scientific mysteries by going incredibly small.
We all know it’s not nice to pull the legs off of bugs.
Daddy longlegs don’t wait for that to happen. These arachnids, related to spiders, drop them deliberately. A gentle pinch is enough to trigger an internal system that discharges the leg. Whether it hurts is up for debate, but most scientists think not, given the automatic nature of the defense mechanism.
It’s called autotomy, the voluntary release of a body part.
Two of their appendages have evolved into feelers, which leaves the other six legs for locomotion. Daddy longlegs share this trait with insects, and have what scientists call the “alternate tripod gate,” where three legs touch the ground at any given point.
That elegant stride is initially hard-hit by the loss of a leg. In the daddy longlegs’ case, the lost leg doesn’t grow back.
But they persevere: A daddy longlegs that is one, two, or even three legs short can recover a surprising degree of mobility by learning to walk differently. And given time, the daddy longlegs can regain much of its initial mobility on fewer legs.
Once these adaptations are better understood, they may have applications in the fields of robotics and prosthetic design.
--- Are daddy longlegs a type of spider?
No, though they are arachnids, as spiders are. Daddy longlegs are more closely related to scorpions.
--- How can I tell a daddy longlegs from a spider?
Daddy longlegs have one body segment (like a pea), while spiders have two (like a peanut). Also, you won’t find a daddy longlegs in a web, since they don’t make silk.
--- Can a daddy longlegs bite can kill you?
Daddy longlegs are not venomous. And despite what you’ve heard about their mouths being too small, they could bite you, but they prefer fruit.
---+ Read the entire article on KQED Science:
https://ww2.kqed.org/science/2....017/08/22/daddy-long
---+ For more information:
Visit the Elias Lab at UC Berkeley:
https://nature.berkeley.edu/eliaslab/
---+ More Great Deep Look episodes:
Stinging Scorpion vs. Pain-Defying Mouse | Deep Look
https://www.youtube.com/watch?v=w-K_YtWqMro
For These Tiny Spiders, It's Sing or Get Served | Deep Look
https://www.youtube.com/watch?v=y7qMqAgCqME
---+ See some great videos and documentaries from the PBS Digital Studios!
Gross Science: What Happens When You Get Rabies?
https://www.youtube.com/watch?v=eiUUpF1UPJc
Physics Girl: Mantis Shrimp Punch at 40,000 fps! - Cavitation Physics
https://www.youtube.com/watch?v=m78_sOEadC8
---+ Follow KQED Science:
KQED Science: http://www.kqed.org/science
Tumblr: http://kqedscience.tumblr.com
Twitter: https://www.twitter.com/kqedscience
---+ About KQED
KQED, an NPR and PBS affiliate based in San Francisco, serves the people of Northern California and beyond with a public-supported alternative to commercial media. Home to one of the most listened-to public radio station in the nation, one of the highest-rated public television services and an award-winning education program, KQED is also a leader and innovator in interactive media and technology, taking people of all ages on journeys of exploration — exposing them to new people, places and ideas.
Funding for Deep Look is provided in part by PBS Digital Studios and the John S. and James L. Knight Foundation. Deep Look is a project of KQED Science, which is supported by HopeLab, The David B. Gold Foundation; S. D. Bechtel, Jr. Foundation; The Dirk and Charlene Kabcenell Foundation; The Vadasz Family Foundation; Smart Family Foundation and the members of KQED.
#deeplook #daddylonglegs #harvestman
