Plate tectonics, or the recycling of Earth's crust, may have begun much earlier than previously thought—and may be a big ...

There is a large population of older adults with physical problems that prevent them from leaving home. Many have significant ...

The Arctic is likely to become “ice-free“ by midcentury—and could pass that grim milestone much sooner—unless much more is done to combat climate change ...

In some cases, however, brains outlast all other soft tissues and remain intact for hundreds or thousands of years.

There are fewer than 500 Ethiopian wolves, and they may be the first large carnivore known to act as a pollinator ...