An alpine glacier that was stable for thousands of years is warming up and melting rapidly.

Ice loss on West Antarctica is causing Antarctica, the continent, to shift.

Global heating of even a few degrees will affect bats' ability to echolocate.

In the long term, many thousands of years, bats could evolve to cope with this. But the heating we are causing today is too fast for evolution to adapt to.

Is it lawful for the USPS to record the outside of all envelopes?

Islamist fanatics in Syria seized supplies that the US had provided to non-Islamist rebels.