These "total monsters of fishes" are extinct today, though new clues about their lives come from CT scans and their closest ...

Biologist and underwater photographer Joseph Ricketts captured charming footage of the river chub, a small freshwater fish with big mating habits. When temperatures reach 65 degrees in spring, male ...

In the quest for eternal life, humans have come up with all kinds of schemes to halt the aging process. From hacking our DNA to blood transfusions, to supplements, and even intermittent fasting, ...