The record sheds light on the climate early humans experienced when they were spreading out of Africa. A tree-ringed African ...

A hidden source of clean energy could power the planet for more than a hundred thousand years if tapped into, according to ...

We've even been asked if you could run solar cells during the long lunar night on reflected earthlight, so we decided to ...

Prepare to be mesmerized by breathtaking 4K orbital views that offer an unprecedented window into the beauty and wonder of ...