After volunteering at a rescue project, one stray’s fate still haunts the author – prompting questions about what ‘doing good ...

"Star Trek" is home to countless alien species, many of whom offer beloved characters. Some are not. We rank the 10 most disturbing alien races in the galaxy.

The research is mounting up that we might not be alone in this big wide world. So what's the likelihood that aliens are out ...

Freed from the threat of invasive predators, Galapagos birds are performing astonishing feats of return and innovation – 200 ...