A volcano that slept for more than 100,000 years before erupting is blowing up our understanding of when volcanoes should be defined as active or extinct. Volcanologists officially classify sleeping ...

We know, the headlines can sound terrifying. In this series, Mashable speaks with experts to bring you the unvarnished truth about science, health, threats from space, and scary-sounding creatures.

The last eruption of Greece’s Methana volcano was around 250 B.C.E. Ever since that event, which was recorded by the Greek historian Strabo, the mountain has lurked silently, just across the Saronic ...

For more than 100,000 years, a Greek volcano lay silent. But deep underground, it was still growing. Tiny zircon crystals show magma was quietly brewing between eruptions, researchers report April 22 ...

Scientists have developed a new way to fight gum disease without wiping out the mouth’s helpful bacteria—a major shift from traditional treatments. Instead of killing everything, this targeted ...

Our expert staff answers frequently asked questions in their areas of expertise and defines common terms so you can be a smarter shopper. Read more here. Over the past few years, nano-hydroxyapetite ...

If you purchased Tom’s of Maine toothpaste in the past six years, you could be eligible for a cash payout stemming from a recent $2.9 million settlement. The class-action lawsuit filed against Tom’s ...

Brushed your teeth with Tom's toothpaste over the past six years? If so, you may be entitled to a cash payout. According to a class action settlement website, people who purchased one or more Tom's of ...

“Using toothpaste for acne typically does more harm than good,” says S. Tyler Hollmig, MD, the director of laser and cosmetic dermatology at the University of Texas at Austin’s Dell Medical School.

Scientists have found that keratin, the protein in hair and skin, can repair and protect tooth enamel. The material forms a mineralized layer that halts decay and restores strength, outperforming ...

A volcano in Russia's far east on Wednesday spewed ash several kilometers into the sky, authorities said, putting on a spectacular display in its latest eruption. The Shiveluch volcano is one of the ...