The Kid Should See This

Claws vs. Nails

Consider the claw. Frequently found on animals around the world, it’s one of nature’s most versatile tools. Bears use claws for digging as well as defense. An eagle’s needle-like talons can pierce the skulls of their prey. Even the ancestors of primates used to wield these impressive appendages until their claws evolved into nails. So what caused this adaptation?

Learn more about Claws vs. Nails, keratin, and how the nails of our primate ancestors likely helped them thrive in the treetops with this TED-Ed lesson by Matthew Borths, directed by Augenblick Studios.

keratin
keratin
claws vs nails
Next, find out where teeth come from, The Science of Skin, and why warm blood is better than cold.

This award-winning video collection is reader-supported. Become a sustaining member to keep TKSST online and free for everyone, including teachers and parents who use it as a resource to spark learning and curiosity for kids.

Get smart curated videos delivered every week.    
Subscribe