A great white shark is a masterwork of evolutionary engineering. These beautiful predators glide effortlessly through the ...

PORTLAND, Maine (AP) — Sharks are the most feared predators in the sea, and their survival hinges on fearsome teeth that regrow throughout their lives. But changes in the ocean’s chemistry could put ...

This discovery adds a new chapter to our understanding of how the immune system evolved in jawed vertebrates, especially in species that don’t have lymph nodes like mammals do. When we think of the ...