Green oceans on early Earth, shaped by iron, pushed microbes to evolve light-absorbing tools that worked in green light.

Typically, a planet's magnetic field funnels the material into its atmosphere. But even planets without a field can still ...

National Geographic is running a challenge for users to submit photos that "celebrate the beauty of the planet" for Earth Day ...

Most people can't answer this science trivia ... can you? How well do you know science trivia? Even if it’s been years since ...

In a Universe that's more than 13 billion years old and home to hundreds of billions of stars, one question still haunts humanity: Why haven't we found life beyond Earth?

It’s Earth Day on April 22 and I want to get involved. How can I support environmental charities trying to address climate ...