Tag Archives: teeth

It’s easy to assume that teeth always grow inside mouths, yet a new study has revealed that some animals – such as the spotted ratfish (Hydrolagus colliei) – grow them elsewhere. Sometimes referred to as ‘ghost sharks’, adult male spotted ratfish have strange-looking hooked protrusions that appear on a head structure called the tenaculum, which the fish use to grasp …

Recent research indicates that shark teeth, some of nature’s most efficient cutting tools, are increasingly vulnerable to environmental changes in ocean chemistry. A 2025 study published in Frontiers in Marine Science investigates how shifting ocean conditions might compromise the structural integrity of predator teeth, providing critical insights into the ecological consequences of global carbon emissions. Ocean Acidification And Its Impact …

Teeth of a Camarasaurus, found in the Morrison Formation, USA, which were also analyzed in the research. Credit: Sauriermuseum Aathal A new method allows scientists to reconstruct carbon dioxide levels and photosynthesis from fossilized tooth enamel. A surprising new line of evidence is providing fresh insights into Earth’s ancient climate. Fossilized dinosaur teeth reveal that the atmosphere during the Mesozoic …

Facebook Tweet Email Link How will the climate crisis affect one of the ocean’s fiercest predators? New research published Wednesday has examined what might happen to sharks’ highly specialized, flesh-cutting teeth. As carbon emissions increase, the ocean is absorbing more carbon dioxide from the atmosphere, lowering pH levels and making seawater more acidic, a process that can affect many ocean …

Forget candy and missed flossings — the biggest danger to your teeth may be hiding in your healthiest habits. “I’ve found that the real damage often comes from the habits people don’t realize are harming their teeth,” said Dr. Pia Lieb, a 30-year cosmetic dentist and the founder of Cosmetic Dentistry Center NYC, who cited sparkling water, juice cleanses and …

Scientists Found 13 Ancient Teeth That May Rewrite Human Evolution  AOL.com Fossils show two types of ancient human ancestors lived at the same place and time. One was possibly an unknown species  CNN New discoveries of Australopithecus and Homo from Ledi-Geraru, Ethiopia  Nature Researchers Discover Fossilized Teeth That May Have Come From an Unknown Hominin Species  Smithsonian Magazine Fossil teeth may come from a …

“Hearst Magazines and Yahoo may earn commission or revenue on some items through these links.” Here’s what you’ll learn when you read this story: Researchers studying a fossil site in Ethiopia discovered 13 teeth that they believe come from a never-before-known species of Australopithecus. The team said this reveals that Australopithecus and the oldest Homo ancestors coexisted up to 2.8 …

Dental treatments from sheep’s wool and other hair could be used to coat teeth to repair enamel and prevent tooth decay, according to a new study. After extracting keratin — a protein found in hair, skin and fingernails — from wool and applying it to teeth, scientists found that the substance formed a protective crystal-like coating that mimicked natural tooth …

About 500 million years ago, the Grand Canyon was a great sea, and among the creatures it harbored was a newly discovered type of penis worm, armed with many rings of teeth. Penis worms are marine creatures with a distinctly phallic appearance. There are more than 20 known species living across the world’s oceans today, as well as a number …

Hello, health enthusiasts! My name is Kaitlin Reilly, and I’m here to round up this week’s best wellness tips. Are you drinking less these days — or just more carefully considering how much you imbibe? If so, you’re not alone: A recent Gallup poll found that many Americans are rethinking their relationship with alcohol. Today 53% of U.S. adults say …