Erratic southern invaders repel rivals with acid.
Scientists identify thousands of new species.
A new study of the world’s only venomous primate.
As the climate warms, the Arctic greens—and vice versa.
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.