To understand how bar-headed geese cross the Himalayas, the astronaut Jessica Meir had to raise some herself.

A new technique can preserve the organ outside the human body for at least 27 hours.

Some birds use a few well-placed feathers to fake their own death and scare off intruders.

Here are three big takeaways from the new UN-led report, which warns that global warming “is a threat to human well-being and planetary health.”

A popular idea to soften the blow of global warming might also make the world’s malaria problem even worse.

The insects have infinite backup plans for hunting us down.