Tag «SciShow»

4 DEADLY Carnivorous Plants

Anna: They snap, they trap, they stick, and they suck. This is the bizarre world of carnivorous plants—leafy creatures that eat everything from insects, to crustaceans, to mammals. I’m Anna, and this is Gross Science. The vast majority of plants only require a few things to survive: sunlight, water, air, and mineral nutrients, which they …

Why Are Marine Mammals So Big?

Why Are Marine Mammals So Big?

[♪INTRO] The blue whale is the largest animal that’s ever existed, heavier than even the biggest of dinosaurs. But scientists have debated why whales are so huge for a long time. The prevailing idea is that if you live in water, buoyancy allows you to get bigger than if you lived on land. But it …

When Giant Amphibians Reigned

Thanks to Curiosity Stream for supporting PBS Digital Studios. 120 million years ago, southern Australia sat within the Antarctic circle. And for about half the year, the skies were dark, and the land was intolerably cold. But it was here, near the bottom of the world, that the last member of a great dynasty made …

7 Things We Don’t Know About the Ocean

7 Things We Don’t Know About the Ocean

Humans have done a pretty good job of exploring the Earth thus far, climbing mountains and crossing continents and planting our flags all over the place in the name of science. But one part of the world that has remained pretty mysterious to us also happens to cover more than 70% of its surface: the …

The Age of Reptiles in Three Acts

The Age of Reptiles in Three Acts

A quarter of a billion years ago, an epic story was starting to unfold all over the world. The heroes of this saga were the survivors of a near apocalypse. They emerged from it as humble creatures, but in time, they came to dominate the Earth. These were the reptiles, which grew to become some …

8 Strange New Deep Sea Creatures

8 Strange New Deep Sea Creatures

Happy World Oceans Day! We’re celebrating Earth’s oceans this whole week, with a series of videos about … the oceans. Turns out they’re full of some pretty weird things, and there’s a lot going on down there that we still don’t understand. And the deepest oceans are among the least understood habitats on Earth, because …

Untangling the Devil’s Corkscrew

Untangling the Devil’s Corkscrew

Imagine you’re a paleontologist in the late 1800s, working among the sandy rocks of Nebraska. You’re searching for fossils in the Harrison Formation — a big swath of siltstone, sandstone, and volcanic ash dating back to the Miocene Epoch some 22 million years ago. And suddenly you find a huge coil of hardened sand stuck …

How Sloths Went From the Seas to the Trees

How Sloths Went From the Seas to the Trees

8 million years ago, off the coast of Peru, a large mammal used its powerful claws to pull itself along the ocean floor, holding fast against the waves as it foraged for seagrass. 5 million years ago, a similar creature was burrowing underground in Argentina, digging burrows so massive that you could walk right into …

Why Are There No Sea Snakes in the Atlantic?

Why Are There No Sea Snakes in the Atlantic?

Thanks to Brilliant for supporting this episode of SciShow. Go to Brilliant.org/SciShow to learn more. [INTRO ♪] Sea snakes are the most common group of marine reptiles in the entire ocean, with almost seventy individual species. But despite their impressive diversity, none of them live in the Atlantic Ocean. Which is weird, and also nice! …