To figure out when headlamps started to have red lights, you have to know when humans started to use headlamps.

From the water that covers most of it to the moon that orbits it, here are some bizarre things about our home planet that science still doesn't completely understand.

Explore 25 Discoveries That Terrified Scientists, from dark energy to rogue planets. Uncover unsettling truths about our ...

Urban emissions of methane—a potent greenhouse gas—are rising faster than bottom-up accounting estimates anticipated, ...

NASA captures the first X-ray image of a star similar to a young Sun, HD 61005, blowing a gas bubble like nothing ever seen ...

Here are some of the stories we’re looking at in our AM-edition of ARC PDX Portland Earth Day event to highlight clean transportation Portland is gearing up for Earth Day with a free, family friendly ...

Evolution works over millennia. Climate change is moving far faster.That mismatch is killing some of the planet's most vital ...