(CNN) -- Hydrogen peroxide, the active ingredient in over-the-counter whitening strips, may be harmful to the layer under the enamel of teeth, according to research presented Tuesday at a scientific ...

Your smile is one of the first things people notice about you, so what’s the harm in reaching for those teeth-whitening strips every now and then? I hate to be the bearer of bad news, but there could ...

Maternal DNA from Neanderthal teeth found in Stajnia Cave show Neanderthals moved across wide areas of Europe.

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Hydrogen peroxide, the active ingredient in ...