Hawaii's most active volcano resumed erupting Wednesday after a weeklong pause. Kilauea began continuously releasing lava ...

"This has been a decade-long detective story, with each recorded meteorite fall providing a new clue," said one astronomer.

The term greenhouse gas often brings carbon dioxide (CO2) to mind, and rightly so, as it is a key contributor to rising ...

The aurora borealis has jumped to the top of many travelers' wish lists, creating a tourism boom in the northernmost reaches ...

A European space telescope launched to explore the dark universe has released a trove of new data on distant galaxies.

The trailblazing Harvard scientist, who documented the dominance of hydrogen and helium in stars, is still inspiring ...