Earlier Arctic plant growth is too early for migrating caribou.
Dung beetles reduce harmful methane emissions in cow droppings.
Madagascar's biodiversity boom ended long ago.
A frog declared extinct nearly two decades ago reappears in Israel.
After 17 years underground, red-eyed Brood II cicadas emerge.
Diversity in algae-eating fish protects coral from toxic seaweed.
A new study identifies a likely ancestor to all placental mammals.
A short-nosed bat bests its nectar-drinking cousin at pollination.
DNA evidence identifies the world’s rarest whale.
City-dwelling coyotes in the United States choose lifelong partners.