Many tarantulas are one particular shade of vivid blue, and no one knows why.
Researchers are using high-resolution satellite images to count the large birds on remote islands.
Dung beetles sexually transmit nematodes, and that’s a good thing—for them, and their young.
The history of animal domestication might be recorded in ancient pee.
This fantastical creature highlights the continuities that extend over centuries of food technology and culture.