Hair, nails, and horns, all made up of keratin, are some of the hardest and most resilient structures in animals. Inside zebrafish cells, keratin plays a distinct role, giving them the strength they ...

Reptiles have been growing armor in their skin on and off for hundreds of millions of years, but scientists never fully ...

A fully grown kangaroo can tower over people, bound across the Australian landscape in giant bounds, and pack enough muscle ...

Unlike mammals, which shed skin in microscopic flakes, snakes must periodically cast off their entire outer keratin layer to allow for growth and to remove parasites. Note the milky, blue eye coloring ...

Why would it have arms so short that it couldn’t even reach its own mouth? How did it use them? First, let’s define what we mean by “short.” The biggest T. rex could measure 45 feet (14 meters) from ...

A giant squid has been spotted off the coast of Western Australia after 25 years, contributing to marine biology research and ...

Christophe Leterrier uses advanced microscopy to uncover neurons’ intricate nanostructure and dynamics while creating ...

Ticklish laughter appears across primates and triggers ancient brain circuits. Yet after two millennia of inquiry, its evolutionary function remains genuinely unresolved.

Every year, millions of animals are used in laboratories, and for many people, the image is immediate and uncomfortable: animals in cages, subjected to painful tests for products that may not seem ...

Please provide your email address to receive an email when new articles are posted on . “Our study demonstrates that dupilumab helps normalize the skin barrier in children, including areas of skin ...