Researchers found evidence from astroid craters that Earth may have had a ring, like Saturn, formed 466 million years ago.

New study with strong University of Arizona ties finds carbon dioxide has played a dominant role in controlling Earth’s temperature for nearly the last half-billion years.

Topline: The brightest comet visible from Earth since 2006, C/2023 A3 Tsuchinshan-ATLAS, should be making an appearance ...

Two veterinarians in the officially evacuated city keep their clinics open, at times forced to amputate the legs of dogs ...