Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. The saber-toothed cats that once prowled modern day California had ...

Komodo dragon teeth are ironclad. Literally. The serrated edges and tips of the reptiles’ razor-sharp chompers are lined with a layer of iron, researchers report July 24 in Nature Ecology & Evolution.

This week on “For Science!” we examine the importance of brushing your teeth with a simple experiment that will really get kids into brushing their teeth once we scientifically prove all the good ...