Ecologists in Australia flipped through thousands of photos taken on trail cameras at a national park. They were looking for ...

This image of massive galaxy cluster MACS J0416.1-2403 was part of the Hubble Space Telescope's Frontier Fields project, which combined the power of natural "gravitational lenses" in space.  The ...

Research provides new insights into how the brain forms habits and explains why they can be so difficult to break.