Annual ozone holes still occur, but Earth’s ozone layer is mending.
A new study of the world’s only venomous primate.
Sharing space with bacteria leaves plenty of room for change.
The United Nations calls for an asteroid defense plan.
Is our family tree due for a pruning?
As the climate warms, the Arctic greens—and vice versa.
Earlier Arctic plant growth is too early for migrating caribou.
Constant vigilance rewards hobbyist astronomers.
Stem cell mini-brains reveal how brain regions organize.
Dung beetles reduce harmful methane emissions in cow droppings.