Ducks are short-necked members of the Anatidae family. They’re smaller than geese and swans, but distinct from other aquatic birds like loons, grebes, and coots. They live all over the world, in both ...

Kennedy, Jr. was seen with a strange white thing in his mouth during a recent Congressional hearing — and we're almost ...

The average whale shark measures about 30 feet long, with a mouth stretching nearly 5-feet across. The largest whale sharks ...

He shares how he gets his shark’s teeth, including megalodon, and what he does with them. He has made a successful business ...

The pig’s mouth revealed its ordinary sharp, tusk-like canines saddled up beside smaller, slightly more human-looking teeth nubs. In theory, a similar process could play out in humans.

I have all of my teeth except for my wisdom teeth. I have never had a toothache. — M.G. Dear M.G.: A person is born with all the teeth they will ever get, but they are not normally erupted at birth.

DEAR DR. ROACH: What causes the growth of new teeth at my current age? I am a 74-year-old woman in good medical health except for a transient ischemic attack (TIA). Generally, I feel well and keep ...

Inside the effort to regrow ‘permanent’ teeth—stem cells, gene-editing, drugs, and more. Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday.

Mouth and lip types aside, you might wonder whether fish actually kiss. Most commonly in an aquarium, you might see fish “kissing” the surface of the glass. This is not a display of self-love ...

This dinosaur’s skull was light as air but its mouth was packed with power—and a unique ability to quickly grow teeth. Here’s ...

We could transplant the young tooth cells at the location of the missing tooth and let them grow inside the mouth. “Alternatively, we could create the whole tooth in the lab before placing it in ...

According to a 2022 survey by the American Dental Association, one-fourth of all adults avoid smiling because of the condition of their teeth and mouth. Another 23% of adults feel embarrassed by it.