Hydropower is outdated and harmful—causing deforestation, reduced rainfall, energy loss, and water insecurity. Safer, more ...

Photographer extraordinaire Don Pettit is about to return to Earth following a seven-month stay aboard the space station. Take a moment to enjoy his best work.

If you think you've seen all the planet has to offer, think again. Of the many national parks across the globe, these offer ...

A portrait of a young Palestinian boy who lost both arms as a result of an Israeli attack in Gaza was honored Thursday as ...