The view of Lake Bacalar from the boardwalk. Dawn was breaking over the lagoon when I looked down and saw one of the oldest life forms on earth. It wasn’t much to look at. Lumpy, white, and sitting ...

Worldwide solar and wind power generation has outpaced electricity demand this year, and for the first time on record, renewable energies combined generated more power than coal, according to a new ...

With current rocket propulsion technology, it would take tens or hundreds of millennia to reach our neighboring star system, Alpha Centauri,” it read. “The stars, it seems, have set strict bounds on ...

Marvel at the beauty of birds and learn the stories behind our favorite images from this year’s contests—featuring, for the first time, photographers from Chile and Colombia.

With SpaceX and Starlink, Elon Musk controls more than half the world’s rocket launches and thousands of internet satellites. That amounts to immense geopolitical power.