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.

Right at the beginning of the Paleozoic, there was a huge explosion of more complex life. And that’s when things started to get really interesting. This is our second installment on the history of life, but you can watch in any order you...

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...

Find out how reptiles evolved from early amphibians, and the adaptations that allowed them to thrive on dry land. Biology - Animal Kingdom - Learning Points. A Twig Curriculum Film. Delivering key learning points. Get straight to the...

This video discusses the various adaptations of reptiles that allow them to thrive on land. It explores their water-tight skin, well-developed lungs, strong legs, and powerful jaws, among other features. The video also highlights their...