Top Vídeos
For more brilliant natural history shows, exclusive to YouTube, head over to our brand-new channel Earth Unplugged! http://www.youtube.com/earthunplugged
Watch a brilliant in flight race between the mighty Peregrine falcon and the humble pigeon. Brilliant short animal video from BBC wildlife show Animals: The Inside Story. 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
In this amazing footage from the BBC wildlife series Cousins, Dr Charlotte Uhlenbroek has her first encounter with a family of gorillas, including an impressive Silverback, having a siesta in the jungle. 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 here: http://www.youtube.com/bbcearth
We filmed a garden orb web spider building their amazing spider web in this time lapse as well as slow motion footage as they capture their first prey with it!
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#SpiderWebTimelapse #SlowMotion #BBCEarth
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
Spider Web Building Time-lapse | BBC Earth
We filmed a garden orb web spider building their amazing spider web in this time lapse as well as slow motion footage as they capture their first prey with it!
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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Be wowed by the brilliant hues of our blue planet and the incredible animals that live therewith this 10 hour loop.
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#OurBluePlanet is a digital collaboration between BBC Earth and OceanX Media with featured media from both companies. Join the conversation over on Twitter @OurBluePlanet.
OceanX 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 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
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 astounding, entertaining, thought-provoking and educational natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.
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This is a channel from BBC Worldwide who help fund new BBC programmes
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Join us underwater to experience a Norwegian Kelp forest in 360° #OurBluePlanet .
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#OurBluePlanet is a digital project between BBC Earth and Alucia Productions. Join the conversation over on Twitter @OurBluePlanet. Check out the full Our Blue Planet playlist here https://www.youtube.com/watch?v=ryM_s...
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.
This is a channel from BBC Worldwide who help fund new BBC programs Service information and feedback: http://bbcworldwide.com/vod-feedback-...
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.
A lone Grevy's Zebra can go for three days without drinking in this dry land and he's been waiting months for female visitors to his territory...Subscribe: http://bit.ly/BBCEarthSub
Taken from Africa.
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. Here you'll find 50 years worth of astounding, entertaining, thought-provoking and educational natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.
Want to share your views? Join our BBC Studios Voice: https://www.bbcstudiosvoice.com/register
This is a channel from BBC Studios who help fund new BBC programmes. Service information and feedback: http://bbcworldwide.com/vod-fe....edback--contact-deta
Music video by Ultravox performing Loves Great Adventure (2009 Digital Remaster).
http://vevo.ly/aQ7dNW
(0:00) 1.White China________________________(17:53) 5.Man of Two Worlds
(3:51) 2.One Small Day______________________(22:22) 6.Heart of the Country
(8:25) 3.Dancing with Tears in My Eyes_______(27:31) 7.When the Time Comes
(13:09) 4.Lament____________________________(32:32) 8.A Friend I Call Desire
Ⓟ&Ⓒ 1984 Chrysalis.
A couple of these tracks could already be found on youtube - here's the complete thing.
Ultravox! - such a great band while John Foxx was still part of it. They appropriately dropped the '!' afterwards, having become a totally different, utterly boring and ridiculous but -oh the irony of it!- extremely successful combo.
approx.timing :
01 - I want to be a machine - 00.00
02 - Slip away - 06.49
03 - Frozen ones - 11.00
04 - Distant smile - 15.22
05 - Young savage - 18.46
06 - My sex - 22.14
07 - Artificial life - 25.08 (fades in)
08 - Wide boys - 29.50
09 - Saturday night (in the city of the dead) - 32.38
10 - The wild, the beautiful and the damned - 35.35
11 - Rockwrok - 42.02
12 - Fear in the western world - 45.25 (incomplete - fades out)
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Nudibranchs may look cute, squishy and defenseless ... but watch out. These brightly-colored sea slugs aren't above stealing weapons from their prey.
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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.
The summer months bring low morning tides along the California coast, providing an opportunity to see one of the state’s most unusual inhabitants, sea slugs.
Also called nudibranchs, many of these relatives of snails are brightly colored and stand out among the seaweed and anemones living next to them in tidepools.
“Some of them are bright red, blue, yellow -- you name it,” said Terry Gosliner, senior curator of invertebrate zoology and geology at the California Academy of Sciences in San Francisco. “They're kind of designer slugs.”
But without a protective shell, big jaws or sharp claws, how do these squishy little creatures get away with such flamboyant colors in a habitat full of predators?
As it turns out, the nudibranchs’ colors serve as a warning to predators: These sea slugs are packing some very sophisticated defenses. And some aren’t above stealing weapons from their prey.
Gosliner and Brenna Green and Emily Otstott, graduate students at San Francisco State University, were out at dawn earlier this summer searching tidepools and floating docks around the Bay Area. They want to learn more about how these delicate little sea slugs survive and how changing ocean temperatures might threaten their futures.
Nudibranchs come in a staggering variety of shapes and sizes. Many accumulate toxic or bad-tasting chemicals from their prey, causing predators like fish and crabs to learn that the flashy colors mean the nudibranch wouldn’t make a good meal.
--- What are nudibranchs?
Nudibranchs are snails that lost their shell over evolutionary time. Since they don’t have a shell for protection, they have to use other ways to defend themselves like accumulating toxic chemicals in their flesh to make them taste bad to predators. Some species of nudibranchs eat relatives of jellyfish and accumulate the stingers within their bodies for defense.
--- Why do nudibranchs have such bright colors?
The bright colors serve as a signal to the nudibranch’s predators that they are not good to eat. If a fish or crab bites a nudibranch, it learns to associate the bad taste with the bright colors which tends to make them reluctant to bite a nudibranch with those colors in the future.
--- What does nudibranch mean?
The word nudibranch comes from Latin. It means naked gills. They got that name because some species of nudibranchs have an exposed ring of gills on their back that they use to breath.
---+ Read the entire article on KQED Science:
https://www.kqed.org/science/1....929993/this-adorable
---+ For more information:
Learn more about Terry Gosliner’s work with nudibranchs
https://www.calacademy.org/sta....ff/ibss/invertebrate
Learn more about Chris Lowe’s work with plankton
http://lowe.stanford.edu/
Learn more about Jessica Goodheart’s study of nematocyst sequestration
https://onlinelibrary.wiley.co....m/doi/full/10.1111/i
---+ More Great Deep Look episodes:
From Drifter to Dynamo: The Story of Plankton | Deep Look
https://youtu.be/jUvJ5ANH86I
For Pacific Mole Crabs It's Dig or Die | Deep Look
https://youtu.be/tfoYD8pAsMw
The Amazing Life of Sand | Deep Look
https://youtu.be/VkrQ9QuKprE
---+ See some great videos and documentaries from PBS Digital Studios!
Why Are Hurricanes Getting Stronger? | Hot Mess
https://youtu.be/2E1Nt7JQRzc
When Fish Wore Armor | Eons
https://youtu.be/5pVTZH1LyTw
Why Do We Wash Our Hands After Going to the Bathroom? | Origin of Everything
https://youtu.be/fKlpGs34-_g
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---+ 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.
#deeplook #nudibranch #seaslug
Dermestid Beetles are fast and fastidious eaters. They can pick a carcass clean in just days leaving even the most delicate bone structures intact. This makes them the perfect tool for museum scientists-- if you keep them far, far away from valuable collections.
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In nature, Dermestid Beetles are death-homing devices. They’ll find a dead body about a week after death and lay eggs in the drying flesh. The larvae emerge with a voracious appetite, outgrowing their skins six to eight times in just days before pupating, becoming adults and flying away to start a new colony.
These Dermestid Beetles at the Museum of Vertebrate Zoology at UC Berkeley are direct descendants from the original colony established in this museum in 1924. The process now used at museums around the world was pioneered here. These are the beetles you see here in this flesh-eating beetles time lapse.
Scientists in the prep lab downstairs receive nearly a thousand carcasses a year. It’s their job to preserve each animal for long-term use in the collections upstairs. And the work is not for the squeamish.
What makes beetles ideal for cleaning museum specimens is that they’re fast and fastidious eaters. They can pick a carcass clean while leaving even the most delicate bone structures intact.
It takes a large beetle colony 24 – 48 hours to clean the bones of small animals like rabbits and owls, and they can work on 100 - 200 specimens at a time. Larger animals like deer or coyotes take about a week.
But the alliance between beetles and museum is an uneasy one. Downstairs the beetles are a critical tool. But if Dermestids got loose upstairs, they could wreak havoc in the library stacks, munching through specimen drawers and ruining entire collections.
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---
More great DEEP LOOK episodes:
Where Are the Ants Carrying All Those Leaves?
https://www.youtube.com/watch?v=-6oKJ5FGk24
What Happens When You Put a Hummingbird in a Wind Tunnel?
https://www.youtube.com/watch?v=JyqY64ovjfY
Pygmy Seahorses: Masters of Camouflage
https://www.youtube.com/watch?v=Q3CtGoqz3ww
Related videos from the PBS Digital Studios Network!
Can Microbes Solve Murder Mysteries? - Gross Science
https://www.youtube.com/watch?v=kRUt9pqMCSg
The Surprising Ways Death Shapes Our Lives - BrainCraft
https://www.youtube.com/watch?v=Joalg73L_gw
Do Animals Mourn Their Dead? - It's Okay to Be Smart (ft. BrainCraft and Gross Science!)
https://www.youtube.com/watch?v=rHJDmMSKlHM
--- More KQED SCIENCE:
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Twitter: https://www.twitter.com/kqedscience
KQED Science: http://ww2.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 #dermestids #dermestidbeetle
The Peruvian Amazon is a dangerous place when you're small. So the young Inga tree hires ants as bodyguards to protect its vulnerable leaves. Their pay: delicious nectar served up in tiny ant-sized dishes. But will the ants keep up their end of the bargain?
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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! *
For some, ants are welcome guests. In the Amazon rainforest of Peru, a type of tree called the Inga actively encourages ants to stick around.
The tree, which is related to plants that produce beans and other legumes, grows tiny structures near the base of its leaves, called nectaries, that secrete a sugary fluid to feed to the ants. In turn, the ants serve as bodyguards, protecting the Inga and its nectaries from invading herbivores.
“Plants have all kinds of defenses, but because Inga leaves are not as toxic as many other plants,” says Suzanne Koptur, a professor of biology at Florida International University, “they’re good food for herbivores of all sizes and shapes, from big mammals like sloths and monkeys to little invertebrates like caterpillars.“
The rainforest is especially dangerous for young trees. The branches and leaves of mature trees merge together high in the air forming a canopy. Young trees on the forest floor struggle to get enough light. Young trees also have fewer leaves, and losing even a few to herbivores can threaten their survival.
They may be small, but few species want to tangle with the aggressive and territorial big-headed ants.
"Ants have powers in numbers, especially if they bite and sting," says Koptur.
The ants keep most herbivores, especially hungry caterpillars, away from the young trees. Simply put, the trees provide nectar to the ants in exchange for protection.
--- What is mutualism?
In biology, mutualism refers to a relationship between two organisms that benefits both of parties. Mutualism is one type of symbiotic relationship.
--- What are caterpillars?
Caterpillars are the larvae of butterflies and caterpillars. Young caterpillars hatch out of eggs, eat, grow and molt. They eventually pupate inside their cocoons and then emerge as winged adults.
--- What is plant nectar?
Nectar is a sugary liquid secreted by plants through structures called nectaries. Nectaries are commonly found in flowers to attract pollinators. Some plants also have extra-floral nectaries located outside of the flowers. To attract animals including ants and predatory wasps that protect the plant from herbivores.
---+ Read the entire article on KQED Science:
https://ww2.kqed.org/science/2....016/11/01/the-double
---+ For more information:
Interactions Among Inga, Herbivores, Ants, and Insect Visitors to Foliar Nectaries
http://faculty.fiu.edu/~koptur....s/pubs/MVbookIngaAnt
---+ More Great Deep Look episodes:
Winter is Coming For These Argentine Ant Invaders
https://www.youtube.com/watch?v=boyzWeHdtiI
Where Are the Ants Carrying All Those Leaves?
https://www.youtube.com/watch?v=-6oKJ5FGk24
This Vibrating Bumblebee Unlocks a Flower's Hidden Treasure
https://www.youtube.com/watch?v=-6oKJ5FGk24
---+ See some great videos and documentaries from the PBS Digital Studios!
It's Okay to Be Smart: Why Don't Ants Get Stuck In Traffic?
https://www.youtube.com/watch?v=kkiuw0HbRq4
Gross Science: The World's Most Expensive Fungus
https://www.youtube.com/watch?v=iV4WHFU2Id8
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KQED Science: http://www.kqed.org/science
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---+ 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 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. macro documentary
#deeplook
When it comes to spotting prey, sharks and rays have a secret sense beyond sight and smell. Tiny goo-filled organs called Ampullae of Lorenzini detect the invisible electric fields produced by all living creatures.
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 Sharks and Rays Sense Electric Fields?
Most animals don’t have the ability to detect electric fields. But sharks, rays, skates and sawfish — members of a group called Elasmobranchii — are masters of detecting electric signals. It’s one of their defining features. Elasmobranchs have specialized organs called Ampullae of Lorenzini. These tiny structures allow them to home in on weak bioelectric fields generated by nearby prey.
Elasmobranch’s electrosensory organs are named after a 17th century Italian physician, Stefano Lorenzini, who first identified them while dissecting an electric ray. Lorenzini noticed dozens of tiny pores around the animal’s mouth. Each of the pores led to jelly-filled canals that ended in pocket-like structures that he called ampullae, the Latin word for a type of round-bottomed flask.
Animals emit low frequency electric fields due to a process known as osmoregulation. This process allows the concentration of ions (charged atoms or molecules) to flow between the inside of our bodies and the outside. In order for our cells to stay intact, the flow of ions needs to be balanced.
But balanced doesn’t necessarily mean equal. The concentration of ions within a shrimp’s body is much lower than that of the sea water it swims in. Their voltage, or potential difference generated between the two concentrations across “leaky” surfaces, can then be detected by the ampullae.
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---
Read the article for this video on KQED Science:
http://ww2.kqed.org/science/2015/08/11/sharks-and-rays-sense-electricity-fish-cant-hide/
#deeplook
Rain falls and within seconds dried-up moss that's been virtually dead for decades unfurls in an explosion of green. The microscopic creatures living in the moss come out to feed. Scientists say the genes in these “resurrection plants” might one day protect crops from drought.
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 does moss grow?
Mosses don’t have roots. Their porous cells absorb water like a sponge, whenever it’s available.
When there’s no rain, mosses dry out completely and stop photosynthesizing. That is, they stop using carbon dioxide and the light of the sun to grow. They’re virtually dead, reduced to a pile of chemicals, and can stay that way for years. Researchers have found dry, 100-year-old moss samples in a museum that came back to life when water was added.
Read an extended article on how scientists hope to use resurrection plants to create crops that can survive drought:
http://ww2.kqed.org/science/20....15/06/25/these-resur
--
More great Deep Look episodes:
Where Are the Ants Carrying All Those Leaves?
https://www.youtube.com/watch?v=-6oKJ5FGk24
What Happens When You Put a Hummingbird in a Wind Tunnel?
https://www.youtube.com/watch?v=JyqY64ovjfY
Pygmy Seahorses: Masters of Camouflage
https://www.youtube.com/watch?v=Q3CtGoqz3ww
See also another great video from the PBS Digital Studios!
It's Okay to Be Smart: Where Does the Smell of Rain Come From?
https://www.youtube.com/watch?v=lGcE5x8s0B8
KQED Science: http://ww2.kqed.org/science
Tumblr: http://kqedscience.tumblr.com
Twitter: https://www.twitter.com/kqedscience
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
Check out America From Scratch: https://youtu.be/LVuEJ15J19s
A rattlesnake's rattle isn't like a maraca, with little bits shaking around inside. So how exactly does it make that sound?
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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.
Rattlesnakes are ambush predators, relying on staying hidden to get close to their prey. They don’t sport the bright colors that some venomous snakes use as a warning to predators.
Fortunately, rattlesnakes have an unmistakable warning, a loud buzz made to startle any aggressor and hopefully avoid having to bite.
If you hear the rattlesnake’s rattle here’s what to do: First, stop moving! You want to figure out which direction the sound is coming from. Once you do, slowly back away.
If you do get bitten, immobilize the area and don't overly exert yourself. Immediately seek medical attention. You may need to be treated with antivenom.
DO NOT try to suck the venom out using your mouth or a suction device.
DO NOT try to capture the snake and stay clear of dead rattlesnakes, especially the head.
--- How do rattlesnakes make that buzzing sound?
The rattlesnake’s rattle is made up of loosely interlocking segments made of keratin, the same strong fibrous protein in your fingernails. Each segment is held in place by the one in front and behind it, but the individual segments can move a bit. When the snake shakes its tail, it sends undulating waves down the length of the rattle, and they click against each other. It happens so fast that all you hear is a buzz and all you see is a blur.
--- Why do rattlesnakes flick their tongue?
Like other snakes, rattlesnakes flick their tongues to gather odor particles suspended in liquid. The snake brings those scent molecules back to a special organ in the roof of their mouth called the vomeronasal organ or Jacobson's organ. The organ detects pheromones originating from prey and other snakes.
---+ Read the entire article on KQED:
https://www.kqed.org/science/1....945648/5-things-you-
---+ More Great Deep Look episodes:
Stinging Scorpion vs. Pain-Defying Mouse | Deep Look
https://www.youtube.com/watch?v=w-K_YtWqMro&t=35s
---+ ?Congratulations ?to the following fans for coming up with the *best* new names for the Jacobson's organ in our community tab challenge:
Pigeon Fowl - "Noodle snoofer"
alex jackson - "Ye Ol' Factory"
Aberrant Artist - "Tiny boi sniffer whiffer"
vandent nguyen - "Smeller Dweller" and "Flicker Snicker"
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---+ 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 S. D. Bechtel, Jr. Foundation, the Dirk and Charlene Kabcenell Foundation, the Vadasz Family Foundation, the Fuhs Family Foundation, Campaign 21 and the members of KQED.
Most flowering plants are more than willing to spread their pollen around. But some flowers hold out for just the right partner. Bumblebees and other buzz pollinators know just how to handle these stubborn flowers. They vibrate the blooms, shaking them until they give up the nutritious pollen.
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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 and meet extraordinary new friends. Explore big scientific mysteries by going incredibly small.
* NEW VIDEOS EVERY OTHER TUESDAY! *
In the summertime, the air is thick with the low humming of bees delivering pollen from one flower to the next. If you listen closely, a louder buzz may catch your ear.
This sound is the key to a secret stash of pollen that some flowers hide deep within their anthers, the male parts of the plant. Only pollinators that buzz in just the right way can vibrate tiny grains out of minuscule holes at the top of the anthers for a protein-rich snack.
The strategy, called buzz-pollination, is risky. But it’s also critical to human agriculture. Tomatoes, potatoes and eggplants need wild populations of buzz pollinators, such as bumblebees, to produce fruit. Honeybees can’t do it.
Plants need a way to get the pollen — basically sperm — to the female parts of another flower. Most plants lure animal pollinators to spread these male gametes by producing sugary nectar. The bee laps up the sweet reward, is dusted with pollen and passively delivers it to the next bloom.
In contrast, buzz-pollinated flowers encourage bees to eat the pollen directly and hope some grains will make it to another flower. The evolutionary strategy is baffling to scientists.
“The flower is almost like playing hard to get,” says Anne Leonard, a biologist at the University of Nevada, Reno who studies buzz pollination. “It’s intriguing because these buzz-pollinated plants ask for a huge energy investment from the bees, but don’t give much back.”
--- What is buzz pollination?
Most flowering plants use sugary nectar as bait to attract bees and other pollinators, which get coated in pollen along the way. And since bees are messy, they inadvertently scatter some of that pollen onto the female part of the next flower they visit.
But some flowers lock their pollen up in their anthers, the male parts of the flower, instead of giving it away freely. The only way for the pollen to escape is through small holes called pores. Some pollinators like bumblebees (but not honeybees) are able to vibrate the flower’s anthers which shakes up the pollen and causes it to spew out of the pores.
The bumblebee collects the pollen and uses it as a reliable and protected source of protein.
--- What important crops use buzz pollination to make food?
The most important crops that use buzz pollination are potatoes, tomatoes, pumpkins, eggplants, cranberries and blueberries
--- What animals are capable of buzz pollination?
Many types of bees engage in buzz pollination, also called sonication. The most common is probably the bumblebee. Honeybees generally don’t use buzz pollination.
---+ Read the entire article on KQED Science:
https://ww2.kqed.org/science/2....016/07/19/this-vibra
---+ For more information:
Anne Leonard Lab, University of Nevada, Reno | Department of Biology
http://www.anneleonard.com/buzz-pollination/
---+ More Great Deep Look episodes:
These Lizards Have Been Playing Rock-Paper-Scissors for 15 Million Years | Deep Look
https://www.youtube.com/watch?v=rafdHxBwIbQ
Winter is Coming For These Argentine Ant Invaders | Deep Look
https://www.youtube.com/watch?v=boyzWeHdtiI
---+ See some great videos and documentaries from the PBS Digital Studios!
It's Okay to Be Smart: Why Don't Other Animals Wear Glasses?
https://www.youtube.com/watch?v=LhubEq6W9GE
Gross Science: The World's Most Expensive Fungus
https://www.youtube.com/watch?v=iV4WHFU2Id8
---+ 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
Some corals look like undersea gardens, gently blowing in the breeze. Others look like alien brains. But in their skeletons are clues that promise to give scientists a detailed picture of the weather from 500 years ago. Reading these bones? Easy. As long as you have the world's most powerful X-ray laser.
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.
Is coral a plant or animal?
Corals are unusual creatures. They are actually a partnership- or symbiosis- between an animal (a polyp) and a plant (algae) in which they work together to survive and thrive.
How does coral grow?
Tiny animals called polyps form an exoskeleton to live in. When one polyp dies, another builds a new home right on top of the old one. Beneath lies the abandoned exoskeletons, like an ancient city made of layer upon layer of old dwellings.
What is coral made of?
Coral exoskeletons are mostly made of calcium carbonate. But sometimes the polyps incorporate tiny amounts of other elements from the surrounding water, including the element strontium. Biologists don’t fully understand why polyps absorb strontium, but it’s a phenomenon that happens consistently across the world’s oceans.
When sea surface temperatures are warmer, corals absorb less strontium into their exoskeletons. When they are colder, they absorb more. By comparing the strontium-to-calcium ratio over time, scientists are able to reconstruct sea surface temperatures from the past. They also can chart long-term climate cycles that occurred over the lifespan of the coral. Since these corals can live for over 500 years, this gives us insights into the weather hundreds of years before written scientific records.
Read the article for this video on KQED Science:
http://ww2.kqed.org/science/20....15/07/07/what-happen
--
More great Deep Look episodes:
Where Are the Ants Carrying All Those Leaves?
https://www.youtube.com/watch?v=-6oKJ5FGk24
What Happens When You Put a Hummingbird in a Wind Tunnel?
https://www.youtube.com/watch?v=JyqY64ovjfY
Pygmy Seahorses: Masters of Camouflage
https://www.youtube.com/watch?v=Q3CtGoqz3ww
See also another great video from the PBS Digital Studios!
It’s Okay to Be Smart: The Oldest Living Things In The World
https://www.youtube.com/watch?v=jgspUYDwnzQ
More KQED Science:
Tumblr: http://kqedscience.tumblr.com
Twitter: https://www.twitter.com/kqedscience
KQED Science: http://ww2.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
Bats have a brilliant way to find prey in the dark: echolocation. But to many of the moths they eat, that natural sonar is as loud as a jet engine. So some bats have hit on a sneakier, scrappier way to hunt.
SUBSCRIBE to Deep Look! http://goo.gl/8NwXqt
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 and meet extraordinary new friends. Explore big scientific mysteries by going incredibly small.
* NEW VIDEOS EVERY OTHER TUESDAY! *
Bats have been the only flying mammals for about 50 million years. Most species, with the exception of the fruit bats, use echolocation -- their built-in sonar -- to detect prey and snatch it from the air.
But not pallid bats. They hunt insects and arachnids that live on the ground by tracking their movements with another sense: hearing. In the final moments of their attack, they land and pluck their prey from the ground, a behavior called gleaning.
It took millions of years for bats to develop the lethal pairing of flight and echolocation. Why would a bat “go back” to a more primitive hunting style?
Many scientists believe the answer may have less to do with the bats alone than with moths, their principal food. In what these scientists describe as an “arms race” of evolution, many moth species have adapted to hear when they’re being tracked and to deploy counter-measures to bat echolocation.
These developments have driven some bats to seek alternate means of catching a meal – in part by keeping their sonar volume down. Pallid bats and other so-called “whispering bats” still use their echolocation to navigate. The volume navigational sonar is much quieter, more like a dishwasher.
For the pallid bat, part of occupying that niche has also meant evolving immunity scorpion venom. Another arms race.
--- Do all bats drink blood?
No, only three bat species are exclusive “hemovores” (blood-eaters), and only one of those, the common vampire bat, prefers mammals.
--- Why can’t humans hear echolocation?
Bat echolocation calls, whether for hunting or navigation – are too high-pitched for our ears to hear.
--- Do all bats carry rabies?
Only ½ to one percent of bats carry rabies. If a bat seems sick, rabies could be the cause. You should never touch any bat that you find.
---+ Read the entire article on KQED Science:
https://ww2.kqed.org/science/2....017/10/10/these-whis
---+ For more information:
Visit the Razak Lab at UC Riverside:
http://www.faculty.ucr.edu/~khaleel/
---+ More Great Deep Look episodes:
A Real Alien Invasion Is Coming to a Palm Tree Near You
https://www.youtube.com/watch?v=S6a3Q5DzeBM
How Mosquitoes Use Six Needles to Suck Your Blood
https://www.youtube.com/watch?v=rD8SmacBUcU
---+ See some great videos and documentaries from the PBS Digital Studios!
Origin Of Everything: The True Origin of Killer Clowns
https://www.youtube.com/watch?v=T5_Li2whOHA
Physics Girl: Fire in Freefall
https://www.youtube.com/watch?v=VAA_dNq_-8c
---+ 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 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
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