Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Two teeth from a ...

Male hominins may have lost the extra-large canine teeth that are seen in most other male primates at least 4.5 million years ago – relatively early in our evolution. This suggests that male human ...

For decades, small grooves on ancient human teeth were thought to be evidence of deliberate tool use—people cleaning their ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. For the past two decades, scientists have been manipulating genes to ...

Losing a tooth is tough. If we lose the small living structures that help us chew our food, we're left with the options of replacing them with dentures or implants that can be costly. Beyond that, ...