Today, all mammals from humans to bats have five fingers or fewer. Yes, even whales, whose finger bones are hidden in their fins. Birds have four or fewer and amphibians get the best of both worlds, often having four digits on their...

Around the time that some of our fishapod relatives were crawling out of the water, others were turning around and diving right back in.

The story of the egg spans millions of years, from the first vertebrates that dared to venture onto land to today’s mammals, including the platypus, and of course birds. Like chickens? We’re here to tell you: The egg came first.

When we picture the first tetrapods, or land vertebrates, crawling out of the ocean, we probably imagine they need legs. But evolution also had to bestow another important adaptation before they could leave the water: blinking!

This week, scientists discover something in a fish fossil that might give us a hand in finding our earliest land-dwelling ancestors.

Wouldn’t it be cool to be able to point at a fossil and know that it’s the first, say, plant? Well... yeah! But it's not that easy! Scientists are always making new discoveries that throw all our old assumptions into...

Hank introduces us to ourselves by taking us on a journey through the fascinatingly diverse phyla known as chordata. And the next time someone asks you who you are, you can give them the facts: you're a mammalian amniotic tetrapodal...

Ozone depletion may have triggered a mass die-off of ancient fish and plants by ultraviolet ray exposure 358 million years ago.

De todas las formas posibles, el cuerpo humano tiene una forma muy específica. ¿Por qué tenemos el cuerpo que tenemos? ¿Qué papel juega la evolución?

Es fascinante explorar cómo nuestra forma corporal, con todas sus...

In this video, Jonathan Tippett, creator of the world's largest tetrapod exoskeleton, shares his journey of combining physical mastery and modern technology to create a new sport. He discusses the construction process, the machine's...