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There are strange little towers on the forest floor. Neat, right? Nope. Inside hides a spider that's cunning, patient and ruthless.
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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.
Most Bay Area hikers pass right by without ever noticing, but a careful eye can spot tiny towers rising up from the forest floor. These mysterious little tubes, barely an inch high, are the homes of a particularly sneaky predator -- the California turret spider.
“To me, the turrets look just like the rook in a chess set,” said Trent Pearce, a naturalist for the East Bay Regional Park District, as he scanned the terrain at Briones Regional Park. “The spiders themselves are super burly – like a tiny tarantula the size of your pinky nail.”
Turret spiders build their towers along creek beds and under fallen trees in forested areas throughout Central and Northern California. They use whatever mud, moss, bark and leaves they can find nearby, making their turrets extremely well camouflaged.
They line the inside of their tiny castles with pearly white silk, which makes the structure supple and resilient
Each turret leads down to a burrow that can extend six inches underground. The spiders spend their days down there in the dark, protected from the sun and predators.
As night falls, they climb up to the entrance of the turrets to wait for unsuspecting prey like beetles to happen by.
Turret spiders are ambush hunters. While remaining hidden inside their turret, they’re able to sense the vibrations created by their prey’s footsteps.
That’s when the turret spider strikes, busting out of the hollow tower like an eight legged jack-in-the-box. With lightning speed the spider swings its fangs down like daggers, injecting venom into its prey before dragging it down into the burrow.
“It’s like the scene in a horror movie where the monster appears out of nowhere – you can’t not jump,” Pearce said.
--- What do turret spiders eat?
Turret spiders mostly ground-dwelling arthropods like beetles but they will also attack flying insects like moths that happen to land near their turrets.
--- Are turret spiders dangerous to people?
Turret spiders are nocturnal so it’s rare for them to interact with humans by accident. They tend to retreat into their underground burrow if they feel the vibrations of human footsteps. They do have fangs and venom but are not generally considered to be dangerous compared to other spiders. If you leave them alone, you shouldn’t have anything to fear from turret spiders.
---+ Read the entire article on KQED Science:
https://ww2.kqed.org/science/2....019/01/15/turret-spi
---+ For more information:
Learn to Look for Them, and California’s Unique “Turret Spiders” are Everywhere
https://baynature.org/article/....and-this-little-spid
---+ More Great Deep Look episodes:
For These Tiny Spiders, It's Sing or Get Served | Deep Look
https://youtu.be/y7qMqAgCqME
Praying Mantis Love is Waaay Weirder Than You Think | Deep Look
https://youtu.be/EHo_9wnnUTE
Why the Male Black Widow is a Real Home Wrecker | Deep Look
https://youtu.be/NpJNeGqExrc
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---+ Shoutout!
Congratulations to ?Iset4, MidKnight Fall7,
jon pomeroy, Justin Felder3, and DrowsyTaurus26?, who were the first to correctly ID the species of spider in our episode - Antrodiaetus riversi (also known as Atypoides riversi) over at the Deep Look Community Tab:
https://www.youtube.com/channe....l/UC-3SbfTPJsL8fJAPK
(hat tip to Edison Lewis10 for posting the entire family tree!)
---+ 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 #spiders #wildlife
O nosso querido Po tem em suas mãos uma nobre e difícil missão: resgatar filhotes de tartarugas das garras de crocodilos famintos. Para isso, Po terá que enfrentar diversos perigos na Lagoa das Lágrimas para trazer todos em segurança para a vovó Tartaruga. Acompanhe conosco mais uma parte deste sensacional jogo em Aperte Start!
Canal de Dracohappygamer: https://www.youtube.com/channe....l/UCisqMA7GpGMJ-P6Oc
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The South American palm weevil is bursting onto the scene in California. Its arrival could put one of the state’s most cherished botanical icons at risk of oblivion.
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! *
Summer means vacation time, and nothing says, “Welcome to paradise!” quite like a palm tree. Though it’s home to only one native species, California has nonetheless adopted the palm as a quintessential icon.
But a new snake in California’s palm tree-lined garden may soon put all that to the test. Dozens of palms in San Diego’s Sweetwater Summit Regional Park, about 10 miles from the Mexican border, are looking more like sad, upside-down umbrellas than the usual bursts of botanical joy.
The offender is the South American palm weevil, a recent arrival to the U.S. that’s long been widespread in the tropics. Large, black, shiny, and possessed of an impressive proboscis (nose), the weevil prefers the king of palms, the Canary Island date palm, also known as the “pineapple palm” for the distinctive way it’s typically pruned.
A palm tree is basically a gigantic cake-pop, an enormous ball of veggie goodness on a stick. The adult female palm weevil uses her long snout to drill tunnels into that goodness—known to science as the “apical meristem” and to your grocer as the “heart” of the palm—where she lays her eggs.
When her larvae hatch, their food is all around them. And they start to eat.
If the South American palm weevil consolidates its foothold in California, then the worst might still be to come. While these weevils generally stick to the Canary Island palms, they can harbor a parasitic worm that causes red-ring disease—a fatal infection that can strike almost any palm, including the state’s precious native, the California fan.
--- Where do South American Palm Weevils come from?
Originally, Brazil and Argentina. They’ve become common wherever there are Canary Island Palm trees, however, which includes Europe, the Mediterranean, the Middle East.
--- How do they kill palm trees?
Their larvae eat the apical meristem, which is the sweet part of the plant sometimes harvested and sold commercially as the “heart of palm.”
--- How do you get rid of them?
If the palm weevils infest a tree, it’s very hard to save it, since they live on the inside, where they escape both detection and pesticides. Neighboring palm trees can be sprayed for protection.
---+ Read the entire article on KQED Science:
https://ww2.kqed.org/science/2....017/06/20/a-real-ali
---+ For more information:
Visit the UC Riverside Center for invasive Species Research:
http://cisr.ucr.edu/invasive_species.html
---+ More Great Deep Look episodes:
Decorator Crabs Make High Fashion at Low Tide
https://www.youtube.com/watch?v=OwQcv7TyX04
Everything You Never Wanted to Know About Snail Sex
https://www.youtube.com/watch?v=UOcLaI44TXA
---+ See some great videos and documentaries from the PBS Digital Studios!
Gross Science: Meet The Frog That Barfs Up Its Babies
https://www.youtube.com/watch?v=9xfX_NTrFRM
Brain Craft: Mutant Menu: If you could, would you design your DNA? And should you be able to?
https://www.youtube.com/watch?v=NrDM6Ic2xMM
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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 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 #palmweevil
I was the first person to release the restored audio, it was leaked and it's everywhere but my own channel. Enjoy a Whitney on FIRE!!!
Watch this cartoon movie and solve funny puzzles at the same time!
Perfect for children who like Cut the Rope universe and toons!
Find hidden objects during the cartoon and share your findings in comments!
Get Cut the Rope: Magic game for iOS, Android & Amazon: http://zep.tl/ctrmagicfb
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Descarga esta producción musical - https://itunes.apple.com/us/al....bum/jesus-siempre-ll
Lleva la musica a la puerta de tu hogar - http://www.amazon.com/shops/samuelhernandezmusic
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Esta producción de Jesús siempre llega a tiempo a bendecido a miles de personas, cientos han sido sanos y salvos atraves de esta producción siendo usada por Dios. Por otra parte cambió la musica cristiana para siempre logrando nominaciones a Grammy Latino y Billboards y convirtiéndose en la primera producción cristiana en colocarse en la posición #1 tanto a nivel cristiano como secular con el tema "Levanto mis manos". Dicha alabanza se ha convertido en un himno a nivel mundial que ha bendecido a millones de personas, porque Jesús no se adelanta ni se atrasa, Jesús siempre llega a tiempo!!
Grizzly bears eat more than salmon. This one is hunting for clams.
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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.
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O palácio sagrado está sendo invadido e corre o risco de ter todos os seus tesouros saqueados. E o único guerreiro que ficou para trás e pode impedir isso é o nosso Po, o grande dragão guerreiro que terá que passar por um verdadeiro teste de resistência! Será que nosso herói será capaz de sobreviver a este desafio? Vamos apertar start!
![Guía LIMBO [Capitulo 1-4]](https://i.ytimg.com/vi/iEF1vPAMELQ/maxresdefault.jpg)
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El personaje principal de Limbo es un chico (al que no se le da nombre) que despierta en medio de un bosque en el "borde del infierno" (el título del juego viene del Latín limbus, que significa "borde") y que en ese momento empieza a buscar a su hermana perdida.
El jugador controla al personaje por la totalidad de Limbo. Al igual que en la mayoría de juegos de plataformas de dos dimensiones, el jugador puede hacer correr al personaje en las dos direcciones, saltar, subir por salientes, subir y bajar cuerdas, y empujar o estirar objetos según necesite en función de la situación. El juego se nos presenta con unos gráficos oscuros, en escala de grises, y con unos efectos de sonido minimalistas, creando así un ambiente misterioso e inquietante.
Looking for astronomy highlights for February 2020? This month is the best time of the year to try to view Mercury, soon after sunset; Mars disappears behind the Moon on Feb. 18; and the bright red star on Orion’s shoulder, Betelgeuse, has been acting weird. (Or has it?)
Additional information about topics covered in this episode of What's Up, along with still images from the video, and the video transcript, are available at https://solarsystem.nasa.gov/w....hats-up-skywatching-
Credit: NASA/JPL-Caltech
Australian Science week runs August 13-21. Check out scienceweek.gov.au for more details.
Se trata de hacer un pistón en el menor tiempo posible :D, mi marca está en 7 minutos, alguien que me supere.......XD
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Link música: http://www.youtube.com/watch?v=L8cdSo4hQE4
Boeing’s Starliner spacecraft launched aboard an Atlas V rocket on an Orbital Flight Test at 6:36 a.m. EST, Friday, Dec. 20, 2019. The spacecraft had an off-nominal orbit insertion, but was placed in a safe orbit and configuration and landed at White Sands, New Mexico on Dec. 22. Watch the landing: https://www.youtube.com/watch?v=lPzNHeX7OYM
Domingo 13/septiembre/2015
Envío para la gloria de Dios el concierto que nuestro amado hno. Roberto Orellana ofreció en el TBB Apopa.
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Sam Penix and Sam Lewontin, of Everyman Espresso in New York City, and Harold McGee, author of On Food and Cooking, percolate over how to get the most out of your grounds. From the chemex to the wood neck, the brewmasters filter out reasons to choose one brewing device over another.
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