A pelican's bill can hold plenty of fish, but it also doubles as a rain catcher on stormy days. Here's how much it holds.

Instead, a gerenuk can achieve its water requirements by consuming foliage. L. walleri exhibits several adaptations key to surviving the arid environments that it inhabits, including several ...

Jezero Crater on Mars was once home to a lake, delta and rivers. See an animation of what it could have looked like when water poured into the crater billions of years ago and present day. Credit: ...