The official “fashion month,” September has concluded its parade of gorgeous outfits. These contain harmful dyes, though. Can microbes make safer colors?

Accidental exposure to bacteria trapped inside a crystal is unlikely. Frozen ancient pathogens, however, are another matter.

While few people can reliably discern any difference in a blind taste test, Coca-Cola is winning in its branding war with Pepsi.

Is there life on Mars? Probably not, but it's likely that there used to be.