The a-pacu-lypse is upon us. As if US waterways weren’t teeming with enough invasive fish of late, a Texas angler caught a South American piranha relative with “human teeth” at a local lake on Sunday.

It’s not surprising that many people fear the dentist. Replacing a tooth often requires invasive surgery and implanting a titanium screw into a patient’s jawbone, then waiting months for that 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, ...