These Spiders Look Like They're in REM Sleep… Which Could Mean They're Dreaming

Spiders Don't Have Ears, But They Can Boost Their 'Hearing' Through Giant WebsCount on Them: Stingrays And Zebra Mbuna Can Add And Subtract Small Numbers

They Will Outlive Us: How Cockroaches Survived The Dinosaur-Killing AsteroidTwo Giant Blobs Lurk Deep Inside Earth, And It Looks Like They're Shape-ShiftersSurprising Discovery Reveals Sand Dunes 'Breathe' Water Vapor

How a Zombifying Virus Can Manipulate Caterpillars Into Killing ThemselvesThis Could Be Why The Massive Volcanic Eruption in Tonga Was So Explosive

A Killer Fungus Is Coming After The Destructive Ants Invading Texas

100s of Undiscovered Mammal Species Could Still Be Out There in The WildThis Bat Is The First to Make It Off The Endangered Species List

Scientists Need You to Guess The Dog Breeds in These Adorable MuttsThis Deaf Dog Helped Rescue a 3-Year-Old Who Got Lost in The Australian Bush

Two Cephalopods Battling Thousands of Feet Underwater Is The Best Thing We've Seen This WeekThe Yellowstone Supervolcano Is a Disaster Waiting to Happen