Top Vídeos
Breath-taking images of a wolf chasing and capturing a caribou in the wild. Brilliant images from BBC natural history masterpiece, Planet Earth. 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
Subscribe: http://bit.ly/BBCEarthSub
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.
Want to share your views with the team behind BBC Earth and win prizes? Join our BBC Studios Voice: https://www.bbcstudiosvoice.com/register
This is a channel from BBC Worldwide who help fund new BBC programmes. Service information and feedback: http://bbcworldwide.com/vod-fe....edback--contact-deta
The Sumatran rhino is facing extinction due to deforestation and poaching. With only an estimated 80 left in the world, can the species be saved?
Subscribe: http://bit.ly/BBCEarthSub
With thanks to the International Rhino Foundation who supplied archive footage
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 2 'Asia'
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
Predator X is back, hunting in deep water where it's able to use it's full power, derived from it's massive size.
Narrated by John Hurt Planet Dinosaur tells the stories of the biggest, deadliest and weirdest creatures ever to walk the Earth, using the latest fossil evidence and immersive computer graphics.
Subscribe to BBC Earth: http://bit.ly/ydxvrP
Visit http://www.bbcearth.com for all the latest animal news and wildlife videos
BBC Earth Facebook http://www.facebook.com/bbcearth (ex-UK only)
BBC Earth Twitter http://www.twitter.com/bbcearth
BBC Earth YouTube Channel: http://www.youtube.com/BBCEarth
Latest BBC Earth videos: http://bit.ly/y1wtbi
Follow lions throughout the different stages of their lives and watch them grow from cute cubs to formidable hunters. What does it take for a lion to survive as an adult?
Subscribe to BBC Earth for more amazing animal videos - http://bit.ly/BBCEarthSub
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.
Want to share your views with the team behind BBC Earth and win prizes? 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
These strange creatures leap from spine covered tree to spine covered tree. Their technique is amazing as they are able to leap from tall tree trunks to land safely and securely, even with babies - if they can avoid their four footed predator, the Fossa. Subscribe: http://bit.ly/BBCEarthSub
From the BBC's Life of Mammals documentary series.
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
Animals must try to gain a position of power in their world, this young male chimpanzee wants to be accepted as part of the elite but it's a dangerous journey...Taken from Life Story.
Subscribe to BBC Earth: http://bit.ly/BBCEarthSubBBC Earth YouTube Channel: http://www.youtube.com/BBCEarth
BBC Earth Facebook http://www.facebook.com/bbcearth (ex-UK only)
BBC Earth Twitter http://www.twitter.com/bbcearth
Visit http://www.bbc.com/earth/world for all the latest animal news and wildlife videos
This is a channel from BBC Studios who help fund new BBC programmes.
A peaceful grazer becomes predator out on the African plains as a baboon stalks a gazelle. Will its reputation as one of the fastest animals on the African savannah be enough to save the gazelle from being caught? Subscribe: http://bit.ly/BBCEarthSub
David Attenborough examines its survival instincts with the aid of computer graphics.
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
In the animal kingdom it's often necessary for the dominant male to defend your family from unwanted attention.
Subscribe to BBC Earth: http://bit.ly/BBCEarthSubBBC Earth YouTube Channel: http://www.youtube.com/BBCEarth
BBC Earth Facebook http://www.facebook.com/bbcearth (ex-UK only)
BBC Earth Twitter http://www.twitter.com/bbcearth
Visit http://www.bbc.com/earth/world for all the latest animal news and wildlife videos
This is a channel from BBC Studios who help fund new BBC programmes.
From monkeys mourning a "dead baby", to lion cubs playing and boisterous bears, our Spy Cameras have been able to capture some truly magical moments on their undercover adventures. Join us as we share some of our favourite interactions from the natural world - all caught on Spy Cam!
Subscribe: http://bit.ly/BBCEarthSub
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
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
Rheingold - River (Fluss English Version)
River, you're flowing on the ????
Picking out your programmed way
Trace, your timeless trip through
Deutschland
????????????? super regional
Tones keep flowing like currents steadily
Currents are controlling our melody
You, know fortresses in ruins
Mirror glass and stainless steel
We, will build on microcircuits
And we're thinking digitally
Tones keep flowing like currents steadily
Currents are controlling our melody
River, we're living by your sides now
Transforming you into AC [Alternate Current]
You, you tell of days gone bye
Waves reflecting chromatically
Tones keep flowing like currents steadily
Currents are controlling our melody
River, you're flowing on the ????
Picking out your programmed way
Trace, your timeless trip through
Deutschland
????????????? super regional
Tones keep flowing like currents steadily
Currents are controlling our melody
----------------------------------------------
Fluss, Du fließt in alter Weise
durch Dein programmiertes Tal
in zeitloser Deutschlandreise
so schön und überregional.
Töne fließen wie ein Strom den Fluss
hinauf
Ströme steuern diesen neuen Tonverlauf.
Du kennst Burgen und Ruinen,
Spiegelglas und Edelstahl.
Wir, wir bauen auf Platinen
und denken digital.
Töne fließen wie ein Strom den Fluss
hinauf
Ströme steuern diesen neuen Tonverlauf.
Fluß, man lebt an Deinen Seiten
und macht dicht zum Wechselstrom,
du erzählst von alten Zeiten,
Wellen spiegeln sich in Chrom.
Töne fließen wie ein Strom den Fluss
hinauf
Ströme steuern diesen neuen Tonverlauf.
Fluss, Du fließt in alter Weise
durch Dein programmiertes Tal
in zeitloser Deutschlandreise
so schön und überregional.
Töne fließen wie ein Strom den Fluss
hinauf
Ströme steuern diesen neuen Tonverlauf.
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Fluffy kittens chasing a ball are beyond adorable -- but they sure aren't born that way. Practically deaf and blind, in their first few weeks they need constant warmth and milk to survive. This is a huge challenge for animal shelters, so they're working with researchers on ways to help motherless kittens flourish.
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.
--
Every year, hundreds of thousands of kittens end up in animal shelters, in need of permanent homes.
But raising orphaned newborns into healthy, fluffy, frisky two-month-olds ready to be adopted requires an enormous behind-the-scenes effort. All across the country, volunteer foster parents log many sleepless nights bottle-feeding kittens every few hours. So researchers and shelters are trying to figure out ways to make it easier.
“A lot of people think fostering is taking kittens home and playing with them,” said Penny Dougherty, chief executive director of Kitten Central of Placer County, an animal shelter she runs from her house in Newcastle, California, 30 miles northeast of Sacramento.
Kitten Central receives most of its kittens from Placer County Animal Services. Dougherty cares for kittens up to one month old, as well as feral and stray cats with litters. Once the kittens weigh at least two pounds and have been spayed and neutered, she returns them to the agency so they can put them up for adoption.
“They’re very happy to have our services,” said Dougherty, “because so many shelters have to euthanize.”
When the days start getting longer, around January, cats start breeding. March is the beginning of what’s known among shelters as “kitten season.” The flow of kittens doesn’t slow down until November.
“Kitten season is kind of one of the banes of shelter existence,” said Cynthia Delany, supervising shelter veterinarian at Yolo County Animal Services, in Woodland, west of Sacramento. “Six or seven months out of the year we’re just flooded with these little guys.”
To steer clear of inundating shelters with newborn kittens, Delany’s advice is to leave any litters you might encounter alone unless they’re in immediate danger. Most of the time their mom will return, she said, so check back periodically.
In an effort to lessen the load on foster parents and increase newborn kittens’ chances of survival, Mikel Maria Delgado, a postdoctoral researcher in the School of Veterinary Medicine at the University of California, Davis, is joining forces with Kitten Central and other animal shelters to figure out if there are optimum temperature and humidity levels that make it possible to feed newborn kittens less frequently. She has distributed incubators to the groups so that two or three kittens can be kept in each one for about three weeks.
---How long do kittens' eyes stay closed?
During the first week-and-a-half of their lives, kittens’ eyes are sealed closed and their ears are folded up, making them practically blind and deaf. They’re born this way because their brains aren’t developed enough to use those senses.
---+ Read the entire article on KQED Science:
https://www.kqed.org/science/1....930803/how-kittens-g
---+ For more information:
If you find a litter of newborn kittens: https://eastbayspca.org/get-in....volved/community-res
---+ More Great Deep Look episodes:
Why Does Your Cat’s Tongue Feel Like Sandpaper?
https://www.youtube.com/watch?v=9h_QtLol75I&t=24s
Watch This Bee Build Her Bee-jeweled Nest
https://www.youtube.com/watch?v=oPbH1YhsdP8
---+ See some great videos and documentaries from PBS Digital Studios!
It’s Okay to Be Smart: Why Do Disney Princesses All Look Like Babies?
https://www.youtube.com/watch?v=T1gzpEktyKo
PBS Eons: The Story of Saberteeth
https://www.youtube.com/watch?v=hbjIhPHRZgc
---+ 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.
The killer punch of the mantis shrimp is the fastest strike in the animal kingdom, a skill that goes hand in hand with its extraordinary eyesight. They can see an invisible level of reality using polarized light, which could lead to a breakthrough in detecting cancer.
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! *
Aggressive, reef-dwelling mantis shrimp take more than one first-place ribbon in the animal kingdom. Outwardly resembling their lobster cousins, their colorful shells contain an impressive set of superpowers.
There are two types of mantis shrimp, named for their attack mode while hunting prey: smashers and spearers. With their spring-loaded, weaponized legs, these predators can crack a snail shell or harpoon a passing fish in a single punch.
The speed of these attacks has earned the mantis shrimp one of their world records: fastest strike in the animal kingdom.
Scientists are finding that another of their special abilities -- incredible eyesight -- has potential life-saving implications for people with cancer.
Mantis shrimp can perceive the most elusive attribute of light from the human standpoint: polarization. Polarization refers to the angle that light travels through space. Though it’s invisible to the human eye, many animals see this quality of light, especially underwater.
But mantis shrimp can see a special kind of polarization, called circular polarization. Scientists have found that some mantis shrimp species use circular polarization to communicate with each other on a kind of secret visual channel for mating and territorial purposes.
Inspired by the mantis shrimp’s superlative eyesight, a group of researchers is collaborating to build polarization cameras that would constitute a giant leap for early cancer detection. These cameras see otherwise invisible cancerous tissues by detecting their polarization signature, which is different between diseased and healthy tissues.
--- How fast is the mantis shrimp punch?
Their strike is about as fast as a .22 caliber rifle bullet. It’s been measured at 50mph.
--- What do mantis shrimp eat?
The “smasher” mantis shrimp eat hard-shelled creatures like snails and crabs. The “spearers” grab fish, worms, seahorses, and other soft-bodied prey by impaling them.
--- Where do mantis shrimp live?
In reefs, from the east coast of Africa to the west coast of Australia, and throughout Indonesia. A few species are scattered around the globe, including two in California.
---+ Read the entire article on KQED Science:
https://ww2.kqed.org/science/2....016/11/15/the-snail-
---+ For more information:
Caldwell Lab at U.C. Berkeley: http://ib.berkeley.edu/labs/caldwell/
---+ More Great Deep Look episodes:
Nature's Scuba Divers: How Beetles Breathe Underwater
https://www.youtube.com/watch?v=T-RtG5Z-9jQ
Sea Urchins Pull Themselves Inside Out to be Reborn
https://www.youtube.com/watch?v=ak2xqH5h0YY
---+ See some great videos and documentaries from the PBS Digital Studios!
Physics Girl: The Ultraviolet Catastrophe
https://www.youtube.com/watch?v=FXfrncRey-4
Gross Science: What Sound Does An Ant Make?
https://www.youtube.com/watch?v=yif0c0bRA48
---+ 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
Pollinator. Mason. Jeweler. A female blue orchard bee is a multitasking master. She fashions exquisite nests out of mud and pollen that resemble pieces of jewelry. And in the process, she helps us grow nuts and fruits.
SUBSCRIBE to Deep Look! http://goo.gl/8NwXqt
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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 explore big scientific mysteries by going incredibly small.
* NEW VIDEOS EVERY OTHER TUESDAY! *
A new type of bee is buzzing through California's orchards. And researchers are hoping that the iridescent, greenish insect may help provide a more efficient way to pollinate nuts and fruits in an era when traditional honeybees have struggled.
Unlike honeybees, blue orchard bees don’t sting humans. And instead of building large colonies with thousands of worker bees caring for eggs laid by a queen bee, female blue orchard bees work alone to build their nests and stock them with food. They’re solitary bees, like most of the 4,000 species of bees in North America.
Blue orchard bees, which are native to the United States, are of increasing interest to scientists, government agencies and farmers for their ability to pollinate almonds, sweet cherries and other tree fruits more efficiently than honeybees.
“This is, I think, the moment for these bees to shine,” said entomologist Natalie Boyle, who studies blue orchard bees at the United States Department of Agriculture in Logan, Utah.
Boyle works with almond growers in California, whose crop is worth $5.2 billion a year and who rely heavily on honeybees to pollinate their orchards every February. Research has found that 400 female blue orchard bees are as effective at pollinating almonds as the more than 10,000 bees in a honeybee hive, said Boyle.
Between 40 and 50 percent of honeybee colonies die each year around the country, according to the yearly National Honey Bee Survey, carried out by universities with the sponsorship of the USDA and the California Almond Board, among others.
Finding other bees that could work side by side with honeybees could offer what Boyle calls “pollination insurance.”
--- What is a mason bee?
The blue orchard bee is a mason bee. Females build their nests out of mud that they collect with two huge pincer-like tools on their face called mandibles. In nature, they build their nests in places like hollow twigs. But they will also build them in pencil-wide drill holes in a wood block.
--- What makes blue orchard bees good pollinators?
One thing that makes blue orchard bees good pollinators are hairs on their abdomen called scopa, on which they collect and spread pollen. Blue orchard bees are particularly good at pollinating almonds and tree fruits like cherries and apples because they love foraging in their flowers. And they’re particularly well-suited to pollinate almonds, which are in bloom in February, when it’s chilly in California’s Central Valley, because they will fly around and forage at a cooler temperature than honeybees.
---+ Read the article on KQED Science:
https://www.kqed.org/science/1....928378/watch-this-be
---+ For more information:
Download the free book How to Manage the Blue Orchard Bee:
https://www.sare.org/Learning-....Center/Books/How-to-
---+ More Great Deep Look episodes:
This Vibrating Bumblebee Unlocks a Flower’s Hidden Treasure
https://www.youtube.com/watch?v=SZrTndD1H10
What Do Earwigs Do With Those Pincers Anyway?
https://www.youtube.com/watch?v=HuOnqWpIL9E
---+ See some great videos and documentaries from PBS Digital Studios!
PBS Eons: When Insects First Flew
https://www.youtube.com/watch?v=7QMcXEj7IT0
CrashCourse: The Plants & The Bees: Plant Reproduction - CrashCourse Biology #38
https://www.youtube.com/watch?v=ExaQ8shhkw8
---+ Follow KQED Science:
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 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 #blueorchardbee #wildlifedocumentary
Male side-blotched lizards have more than one way to get the girl. Orange males are bullies. Yellows are sneaks. Blues team up with a buddy to protect their territories. Who wins? It depends - on a genetic game of roshambo.
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. Explore big scientific mysteries by going incredibly small.
* NEW VIDEOS EVERY OTHER TUESDAY! *
Every spring, keen-eyed biologists carrying fishing poles search the rolling hills near Los Banos, about two hours south of San Francisco. But they’re not looking for fish. They’re catching rock-paper-scissors lizards.
The research team collects Western side-blotched lizards, which come in different shades of blue, orange and yellow.
Barry Sinervo, a professor of ecology and evolutionary biology at UC Santa Cruz, leads the team. Their intricate mating strategies reminded the the researchers of the rock-paper-scissors game where rock beats scissors, scissors beats paper and paper beats rock.
It’s all about territories. Orange males tend to be the biggest and most aggressive. They hold large territories with several females each and are able to oust the somewhat smaller and less aggressive blues. Blue males typically hold smaller territories and more monogamous, each focusing his interest on a single female. Yellow males tend not to even form exclusive territories Instead they use stealth to find unaccompanied females with whom to mate.
The yellow males are particularly successful with females that live in territories held by their more aggressive orange competitors. Because the orange males spread their attention among several females, they aren’t able to guard each individual female against intruding yellow males. But the more monogamous blues males are more vigilant and chase sneaky yellow males away.
Their different strategies keep each other in check making the system stable. Sinervo believes this game has likely been in play for at least 15 million years.
--- How do side-blotched lizards choose a mate?
The males compete with each other, sometimes violently, for access to females. The females generally prefer males of their own color but also give preference to whichever color male is more rare that mating season.
--- Why do lizards do push up and down?
Male lizards do little pushups as a territorial display meant to tell competitors to back off. It’s best to use a warning instead of fighting right away because there’s always a danger of getting hurt in a fight. Some lizards like side-blotched lizards also use slow push ups to warn their neighbors of an incoming threat.
--- Why do side-blotched lizards fight?
Sometimes aggressive territorial displays are not enough to dissuade invaders so side-blotched lizards will resort to fighting. They have small sharp teeth and will lunge at each other inflicting bites and headbutts.
---+ Read the entire article on KQED Science: https://ww2.kqed.org/science/2....016/05/17/these-liza
---+ For more information:
The Lab of Dr. Barry Sinervo, LizardLand, University of California, Santa Cruz http://bio.research.ucsc.edu/~....barrylab/lizardland/
---+ More Great Deep Look episodes:
Meet the Dust Mites, Tiny Roommates That Feast On Your Skin
https://www.youtube.com/watch?v=ACrLMtPyRM0
Stinging Scorpion vs. Pain-Defying Mouse
https://www.youtube.com/watch?v=w-K_YtWqMro
These Crazy Cute Baby Turtles Want Their Lake Back
https://www.youtube.com/watch?v=YTYFdpNpkMY
---+ See some great videos and documentaries from the PBS Digital Studios!
It's Okay to Be Smart: The Cosmic Afterglow
https://www.youtube.com/watch?v=ZvrHL7-c1Ys
It's Okay to Be Smart: The Most Important Moment in the History of Life
https://www.youtube.com/watch?v=Jf06MlX8yik
---+ 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. 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 #lizards #rockpaperscissorslizardspock
Join Deep Look on Patreon NOW!
https://www.patreon.com/deeplook
Cone Snails have an arsenal of tools and weapons under their pretty shells. These reef-dwelling hunters nab their prey in microseconds, then slowly eat them alive.
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. Explore big scientific mysteries by going incredibly small.
New research shows that cone snails — ocean-dwelling mollusks known for their brightly colored shells — attack their prey faster than almost any member of the animal kingdom.
There are hundreds of species of these normally slow-moving hunters found in oceans across the world. They take down fish, worms and other snails using a hollow, harpoon-like tooth that acts like a spear and a hypodermic needle. When they impale their prey, cone snails inject a chemical cocktail that subdues their meal and gives them time to dine at their leisure.
Cone snails launch their harpoons so quickly that scientists were previously unable to capture the movement on camera, making it impossible to calculate just how speedy these snails are. Now, using super-high-speed video, researchers have filmed the full flight of the harpoon for the first time.
From start to finish, the harpoon’s flight takes less than 200 micro-seconds. That’s one five-thousandth of a second. It launches with an acceleration equivalent to a bullet fired from a pistol.
So how do these sedentary snails pull off such a high-octane feat? Hydrostatic pressure — the pressure from fluid — builds within the half of the snail’s proboscis closest to its body, locked behind a tight o-ring of muscle. When it comes time to strike, the muscle relaxes, and the venom-laced fluid punches into the harpoon’s bulbous base. This pressure launches the harpoon out into the snail’s unsuspecting prey.
As fast as the harpoon launches, it comes to an even more abrupt stop. The base of the harpoon gets caught at the end of the proboscis so the snail can reel in its meal.
The high-speed action doesn’t stop with the harpoon. Cone snail venom acts fast, subduing fish in as little as a few seconds. The venom is filled with unique molecules, broadly referred to as conotoxins.
The composition of cone snail venom varies from species to species, and even between individuals of the same species, creating a library of potential new drugs that researchers are eager to mine. In combination, these chemicals work together to rapidly paralyze a cone snail’s prey. Individually, some molecules from cone snail venom can provide non-opioid pain relief, and could potentially treat Parkinson’s disease or cancer.
--- Where do cone snails live?
There are 500 species of cone snails living in the Indian and Pacific Oceans, the Caribbean and Red Seas, and the Florida coast.
--- Can cone snails kill humans?
Most of them do not. Only eight of those 500 species, including the geography cone, have been known to kill humans.
--- Why are scientists interested in cone snails?
Cone snail venom is derived from thousands of small molecules call peptides that the snail makes under its shell. These peptides produce different effects on cells, which scientists hope to manipulate in the treatment of various diseases.
---+ Read the entire article on KQED Science:
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Here’s what WebMD says about treating a cone snail sting:
https://www.webmd.com/a-to-z-g....uides/cone-snail-sti
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This Mushroom Starts Killing You Before You Even Realize It
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Take Two Leeches and Call Me in the Morning
https://youtu.be/O-0SFWPLaII
---+ See some great videos and documentaries from the PBS Digital Studios!
Space Time: Quantum Mechanics Playlist
https://www.youtube.com/watch?v=-IfmgyXs7z8&list=PLsPUh22kYmNCGaVGuGfKfJl-6RdHiCjo1
Above The Noise: Endangered Species: Worth Saving from Extinction?
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Kidnapper ants raid other ant species' colonies, abduct their young and take them back to their nest. When the enslaved babies grow up, the kidnappers trick them into serving their captors – hunting, cleaning the nest, even chewing up their food for them.
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A miniature drama is playing out on the forest floor in California’s preeminent mountain range, the Sierra Nevada, at this time of year. As the sun sets, look closely and you might see a stream of red ants frantically climbing over leaves and rocks.
They aren’t looking for food. They’re looking for other ants. They’re kidnappers.
“It’s hard to know who you're rooting for in this situation,” says Kelsey Scheckel, a graduate student at UC Berkeley who studies kidnapper ants. “You're just excited to be a bystander.”
On this late summer afternoon, Scheckel stares intently over the landscape at the Sagehen Creek Field Station, part of the University of California’s Natural Reserve System, near Truckee, California.“The first thing we do is try to find a colony with two very different-looking species cohabitating,” Scheckel says.
“That type of coexistence is pretty rare. As soon as we find that, we can get excited.”
--- How do ants communicate?
Ants mostly use their sense of smell to learn about the world around themselves and to recognize nestmates from intruders. They don’t have noses. Instead, they use their antennae to sense chemicals on surfaces and in the air. Ants’ antennae are porous like a kitchen sponge allowing chemicals to enter and activate receptors inside. You will often see ants tap each other with their antennae. That behavior, called antennation, helps them recognize nestmates who will share the same chemical nest signature.
---Can ants bite or sting?
Many ants will use their mandibles, or jaws, to defend themselves but that typically just feels like a pinch. Some ants have a stinger at the end of their abdomen that can deliver a venomous sting. While the type of venom can vary across species, many ants’ sting contains formic acid which causes a burning sensation. Some have special glands containing acid that can spray at attackers causing burning and alarming odors.
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https://www.kqed.org/science/1....947369/kidnapper-ant
---+ For more information:
Neil Tsutsui Lab of Evolution, Ecology and Behavior of Social Insects at the University of California, Berkeley
https://nature.berkeley.edu/tsutsuilab/
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Bugs and beetles can’t hold their breath underwater like we do. But some aquatic insects can spend their whole adult lives underwater. How do they do it? Meet nature’s Scuba divers. They carry their air with them—in some cases, for a lifetime.
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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 some insects breathe underwater?
Air-breathing aquatic bugs and beetles don’t hold their breath the way sea mammals do, nor do they have gills like fish.
So how do they do it? The answer lies in their small size. Insect scuba strategies hinge on a property of water that relative giants like us usually overlook: surface tension.
People first crossed the line between land and sea to become scuba divers more than 70 years ago, when Jacques Cousteau pioneered the Aqua-Lung in Nazi-occupied France.
But some species of aquatic insects have been doing it for millions of years.
“Water beetles have been breathing underwater since before the dinosaurs existed,” said Crystal Maier, an entomologist at The Field Museum in Chicago. “It has evolved at least 10 times across the insect tree of life.”
--- What is surface tension?
Surface tension is the property of any liquid that describes how its particles stick together. In the case of water, surface tension is especially strong, enough to form a kind of film where it meets the air, whether at the surface or in a bubble.
The film is so strong, in fact, that a paper clip, which should sink because of its density, will float.
Surface tension is a delicate force, vulnerable to changes temperature, turbulence or the introduction of contaminants, like soap. A sudden drop in surface tension can drown a whole insect community in an instant.
Though it might not seem to affect our world to the same degree, surface tension is active all around us. It allows raindrops to form, trees to bring water to their leaves and ice to float. So in a sense, we too live on a thin boundary, ruled by the same subtle properties of water.
--- How do beetles use surface tension to breathe underwater?
If you’re a bug the size of a paperclip, in other words, surface tension makes a difference. Harnessing it, some aquatic beetles carry the oxygen they need underwater in the form of a temporary bubble, sort of like a natural scuba tank. Others encase themselves in a layer of air and draw oxygen from it their whole lives.
“It’s a pretty successful group of insects. They’re on every continent, except Antarctica,” said Cheryl Barr, collection manger emeritus at the Essig Museum of Entomology at UC Berkeley.
--- Super videos from the PBS Digital Studios Network!
Seven Surface Tension Experiments | Physics Girl
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Nature's Most Amazing Animal Superpowers | It's Okay to Be Smart
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Why Don’t These Cicadas Have Butts? | Gross Science
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What Happens When You Put a Hummingbird in a Wind Tunnel?
https://www.youtube.com/watch?v=JyqY6...
You're Not Hallucinating. That's Just Squid Skin.
https://www.youtube.com/watch?v=0wtLr...
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Biper y sus Amigos - Super Agente Juan
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