The hydra's got kind of a jellyfish thing going on, with tentacles it uses to snag prey. But this tiny freshwater creature regenerates itself over and over again.

Our childhood hermit crab has a rather more … sizable cousin: the 3-foot-wide, 9-pound coconut crab that can rip coconuts and sometimes, well, kittens to pieces.

'Snowden' stars Joseph Gordon-Levitt and Shailene Woodley discuss the making of their new movie, and talk about how technology has essentially taken away our right to privacy.

The siphonophore may look like a jellyfish, but it's something entirely different: a colony of clones that packs a serious punch.

Meet the lumpsucker, the tiny fish that sucks at swimming but is great at suctioning.

The grasshopper mouse ain't like any other mouse on Earth, in the sense that it fights scorpions and turns their venom from a toxin into a painkiller.

Astronomers have discovered seven dwarf planets orbiting a star 40 light years away from us. Not impressed? How about this — the planets may just be able to harbor life.

David Pierce reviews the new all-in-one PC from Microsoft. It's a joy to use, especially if you like drawing with a pen on a massive touchscreen.

Gordon Ramsay uses the power of Twitter to answer some common cooking questions.

Ken Jeong uses the power of Twitter to answer some common medical questions.

With the social-media platform killing off its infamous avatar, we pay our respects to the departed Twitter eggs.

Bill Nye uses the power of Twitter to answer some common science questions. Check out Bill's new show on Netflix "Bill Nye Saves The World" premiering April 21st!

The Astrobee is a brilliant little robot that'll use puffs of air to autonomously float around the International Space Station.

Robots can learn to do tasks just fine. Getting different kinds of robots to share knowledge, though, is another challenge entirely.

Game designer Jeff Kaplan uses the power of Twitter to answer some common "Overwatch" questions.

Nick Offerman uses the power of Twitter to answer some common woodworking questions. Nick's book Good Clean Fun and film The Hero are both out now.

The Human Support Robot from Toyota is an advanced robot that’s been helping a paralyzed war vet at home.

Bungie's Luke Smith, design director of Destiny 2, answers Twitter's burning questions about the Destiny franchise. What if the loot cave still existed? How will characters transfer to Destiny 2? Did the wizard really come from the moon?

'The LEGO Ninjago Movie' stars Jackie Chan and Olivia Munn use the power of Twitter to answer some common martial arts questions. Jackie also teaches Olivia how to karate chop some pieces of wood and defend herself from knife attacks.

Astrophysicist and 'StarTalk' host Neil deGrasse Tyson uses the power of Twitter to answer some common questions about our universe. What is a quark? Is there a limit to the expansion of the universe? Tune into 'StarTalk' airing Sundays at 11pm/10c on National Geographic.

Former NASA astronaut Scott Kelly uses the power of Twitter to answer some common questions about astronauts. How fast is the international space station? Can you see the eclipse from space? Scott Kelly's book 'Endurance' is now available.

LaVar Ball uses the power of Twitter to answer some common questions about basketball. Who has the worst attitude in NBA history? What's the least cool NBA jersey? What's with the Golden State Warriors' facial hair? Check out "Ball in the Family" on Facebook Watch. New episodes air Sundays.

DJ Dillon Francis uses the power of Twitter to answer some common questions about DJing. Dillon Francis’ new single, Hello There ft. Yung Pinch, is available on all music streaming platforms.

Tony Hawk uses the power of Twitter to answer some common questions about skateboarding. Will there ever be another Tony Hawk's Pro Skater? What skateboarding trick was the hardest to learn? Are you ever too old to start skating? Tony also demonstrates how to set up a new skateboard, how to apply griptape, how to do an ollie, how to boardslide, how to do a 540° McTwist and more.

Chess grandmaster Garry Kasparov uses the power of Twitter to answer some common questions about the game of chess. Why do chess players point at pieces with their middle finger? Why does the knight move the way it does? What's the more valuable piece, the knight or the bishop? Garry answers all these questions and more!

Legendary wide receiver Jerry Rice uses the power of Twitter to answer some common questions about the game of football.

U.S. Olympic and Paralympic athletes use the power of Twitter to answer some common questions about their respective Olympic and Paralympic sports.

Neuroscientist and public science communicator Anil Seth uses the power of Twitter to answer some common questions about neuroscience. How does memory work? Can we delete memories? Do blind people dream? Anil answers all these questions and more! Featuring Anil Seth, Professor of Cognitive and Computational Neuroscience and Co-Director of the Sackler Centre for Consciousness Science, University of Sussex, UK Twitter: @anilkseth Website: www.anilseth.com

Blizzard's Ben Brode, game director on Hearthstone, uses the power of Twitter to answer some common questions about Hearthstone. What are the chances we see cards added to the classic set? Will we see any cards get buffs? What's the best way to get back into Hearthstone after some time off?

'Blockers' star John Cena uses the power of Twitter to answer some common questions about professional wrestling. What's the most dangerous move in wrestling? What is it like working for Vince McMahon? Why don't wrestlers have body hair? John answers all of these questions and more!

The Slow Mo Guys (Gavin Free and Dan Gruchy) use the power of Twitter to answer some common questions about The Slow Mo Guys, The Super Slow Show, and filming in slow motion. What is their process like when coming up with new video ideas? What's their favorite video they've done? Where do they get all the food for the Super Slow Show? The Slow Mo Guys star in the YouTube original series The Super Slow Show. Catch the final episodes April 11th.

Bill Nye uses the power of Twitter to answer even more science questions. How does the internet work? What's the difference between a meteor, meteorite, and an asteroid? Does anyone really know how gravity works? Is water wet? Bill answers all these questions and more!

Director James Cameron uses the power of Twitter to answer some common questions about the science fiction genre. James Cameron's Story of Science Fiction premieres on AMC on 4/30

Bill Nye, James Cameron, Ken Jeong, Neil DeGrasse Tyson, former NASA astronaut Scott Kelly and neuroscientist Anil Seth answer the most interesting science questions from Twitter. Do your guts float in space? Do aliens exist? Can you punch specific memories out of your brain? What exactly is a tractor beam? If humans evolved from monkeys, why are there still monkeys?

Riot Games Lead Designer Greg Street once again uses the power of Twitter to answer some common questions about League of Legends. Which three heroes would Greg crack a cold one with? Is Jhin based on any real life serial killers? Does League of Legends ever ban people?

Riot Games Lead Designer Greg Street uses the power of Twitter to answer some common questions about League of Legends. When will teemo get deleted? Why is it taking so long to release another permanent game mode? Why are death timers so long in one for all? Why does the entire team get punished when one player rage quits? How long until a Battle Royale game mode is announced? When is LoL 2 coming?

Brendan Greene (aka PlayerUnknown), creative director of PlayerUnknown's Battlegrounds, uses the power of Twitter to answer some common questions about PUBG. Why do vehicles seem to weigh so little? Is PUBG coming to PS4? Will the Xbox One get fixed? Will the game include hit indicators?

Liza Koshy, Markiplier, Rhett & Link, and Hannah Hart use the power of Twitter to answer some common questions about YouTube content creation. Hannah Hart is the host of hit podcast "Hannahlyze This,” the self-help podcast that just can’t help itself. The podcast tackles candid conversations about mental health, as well as lighthearted takes on new self-help “fads” like rage rooms and suspension chambers.

Twitter and Square Cofounder and CEO Jack Dorsey spoke with WIRED’s Editor-in-Chief Nicholas Thompson as part of WIRED25, WIRED’s 25th anniversary celebration in San Francisco.

NCT 127 use the power of Twitter to answer some common questions about K-pop. Does a K-pop star have to be from Korea? Why are some K-pop groups so large? Do K-pop bands have opening acts? Taeil, Johnny, Taeyong, Yuta, Doyoung, Jaehyun, Winwin, Jungwoo, Mark, and Haechan answer all these questions and more!

Ken Jeong uses the power of Twitter to answer even more common medical questions. Will you get the flu from a flu shot? Can stress make you sick? What IS E. Coli? Ken's comedy special, "You Complete Me, Ho" is streaming on NETFLIX now.

Bon Appétit's Brad Leone and Claire Saffitz use the power of Twitter to answer some common questions about cooking. Brad and Claire offer their chef support to the internet masses, answering questions about food dehydrators, kombucha and more! Brad’s new show It’s Alive: Goin’ Places is now available on Roku, Apple TV, Amazon FireTV, and Android TV. Claire’s new show Bon Appétit’s Baking School launches later this month. To learn more about the channel, visit bonappetit.com/tv

Tattoo artist Keith "Bang Bang" McCurdy uses the power of Twitter to answer some common questions about tattoos and tattooing. What's the best way to practice tattooing? What techniques can a tattoo artist use to do proper shading? Do tattoo artists ever refuse to do certain tattoos?

Drew McCoy, Project Lead at Respawn Entertainment, uses the power of Twitter to answer some common questions about Apex Legends. What are some pro tips for Apex? What's an heriloom? What is the name of Bloodhound's bird? Drew answers these questions and much, much more!

Ed Boon, Creative Director at NetherRealm Studios, uses the power of Twitter to answer some common questions about Mortal Kombat 11. Why does Sub-Zero always get beat by Scorpion in promotional trailers? How do you properly do Skarlet's Brutality? How many character skins does each character have in MK11? Mortal Kombat 11 is now available for PS4, PS4 Pro, Xbox One, Xbox One X, Nintendo Switch and PC.

Nick Jonas and Kelly Clarkson use the power of Twitter to answer some common questions about singing. How can you increase your vocal range? How do people sing and play an instrument at the same time? UglyDolls is in theaters May 3

Tattoo artist Keith "Bang Bang" McCurdy uses the power of Twitter to answer even more common questions about tattoos and tattooing. What happens when you get a scar on your tattoo? How hard is it to get a tattoo removed? How much should you tip a tattoo artist?

Astronomer Jill Tarter, former director of the Center for SETI Research, uses the power of Twitter to answer common questions about extraterrestrial life. What if SETI found intelligent life on another planet? Would they keep it a secret? Did US fighter pilots really see a UFO?

Magician Penn Jillette uses the power of Twitter to answer common questions about magic. Do magicians ever reveal their secrets? Do Penn and Teller ever mess up an illusion? Is magic actually real? Penn answers all these questions and more! Penn & Teller’s MasterClass can be found at MasterClass.com/pt. Users can access this course and more than 60 MasterClass courses by subscribing to the All-Access Pass for $180 per year.

Avengers: Endgame directors Anthony and Joseph Russo use the power of Twitter to answer common questions about Avengers: Endgame and the Marvel Cinematic Universe. THIS VIDEO CONTAINS AVENGERS SPOILERS! Why does Falcon get the shield? Why aren't there any Nova Corps members in the fight against Thanos? Why are some of the Avengers: Endgame deleted scenes so great? The Russo brothers answer all these questions, and more! Avengers: Endgame is available on Digital and Blu-Ray now!