Human's sense of smell seems to be better than most people think, and an Australian museum teamed up with some rock climbers to try to help save an endangered species.

From the Archean Eon to the Holocene Epoch, check out this SciShow mini-series for a primer about life on earth.

SciShow’s hot take: Peppers don’t produce that spicy goodness for the reason you think!

Humans can’t go too far above or below sea level unaided, but there are some complex forms of life that CAN survive at super high elevations or in the deepest parts of the ocean.

Hank talks about ancient sexy times, and how we know that early humans were getting it on with all kinds of folks.

What do kangaroos, koalas, and opossums all have in common? Find out when you learn all about marsupials!

All mammals share certain characteristics, like warm blood and backbones. But despite their similarities, these creatures also have many biological differences - and one of the most remarkable differences is how they give birth. Kate...

Hank gives a quick run-down of the reasons scientists think the land mammals of today are nowhere near the size of the largest sauropods. Some of them might surprise you!

It’s pretty well known that Australia is home to some strange animals, but echidnas are especially weird evolutionary misfits.

Bats are amazing and not just because they're the only mammal that can fly! But they also carry a lot of diseases that are dangerous to humans, and while that is definitely not their fault, there is actually a lot we can...

In this weeks science news, new fossil has been found that might help us understand how jaw bones evolved into complex middle ears found in mammals, and a new treatment regimen for treating babies with HIV shows promise.

The best evidence we have suggests that, while Caviomorpha originated in South America, they came from ancestors in Africa, over 40 million years ago. So how did they get there?

This week's SciShow News finds Hank up to his elbows in weird disorders and strange behaviors, including a chemical that makes men stay faithful, new insights into what makes some behavior contagious, and the truth about a disease that...

All mammals produce milk, but you probably wouldn't want to dip your cookies in all of them.

When you think of a wild carnivore, you might imagine a lion felling a wildebeest, but let us introduce you to the kinkajou, a tree-dwelling creature that uses its adaptations to prey on… fruit, mostly.

You might have heard about animals behaving oddly right before an earthquake hits. But are these reports more than just anecdotes?

Bison are magnificent! Join Jessi and Squeaks and learn all about America's National Mammal.

Sled dogs are the best endurance athletes in the world thanks to a weird quirk in their metabolism.

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Both North and South America have their own species of marsupial, the opossum, but how they got so far away from their Australian relatives is a bit of a mystery.

Evolution is known to be a long, slow process. But thanks to our interference, some animals have adapted at light speed in order to survive.

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Hank examines the zoological definition of monogamy, as well as some other breeding strategies that animals use.

You might think venomous snakes or fierce lions are the best hunters, but turns out they are not even close to these 6 actual best hunters in the animal kingdom.

Strange landscapes, scorching heat and (sometimes) mad crocodiles await scientists seeking clues to evolution's genius. Paleontologist Paul Sereno talks about his surprising encounters with prehistory -- and a new way to help students...

In which John Green, Hank Green, and Emily Graslie teach you about evolution. So, in the last 3.8 billion years, life on Earth has evolved from single-celled prokaryotes to the dizzying array of life we have today. So how did all this...