Yes, they can.

Healthy birds watched their friends get sick with a bacterial disease. Their immune cells freaked out.

Photosynthesis is about the plantiest thing on Earth. The little green thieves manage to pull it off anyway.

Whales have a history that is among the strangest and least-understood of any animal—and barnacles might be the key to unlocking their secrets.

Whale sharks can dive more than a mile deep. Marine biologists are still trying to figure out why they bother.