Yasemin Saplakoglu

California firefighters have wrapped the bases of the world's largest trees in fire-resistant aluminum blankets to protect them from a wildfire that is raging nearby.

In the 12th century, Chinese and Japanese astronomers spotted a supernova in the sky shining as brightly as Saturn.

An enormous alligator is suspected of killing a man in Louisiana, according to news reports.

The youngest age that a person can get a COVID-19 vaccine is 12. That may change soon.

Alarms blared aboard the Russian side of the International Space Station (ISS) early Thursday (Sept. 9), and the crew reported seeing smoke and smelling burnt plastic, according to news reports.

A brown, long-tailed bird at the Taronga Zoo Sydney in Australia has learned how to mimic the shrieks and shrills of human babies.

Results from a massive study in Bangladesh unequivocally show that surgical masks reduce the spread of SARS-CoV-2, scientists say.

A 23-year-old student in Germany can shrink and enlarge his pupils on demand, according to a new case report — a feat that was previously thought to be impossible.

In July, a group of scientists accidentally found themselves on a tiny island in northern Greenland made up of mounds of silt and gravel. It turned out to be an unknown island.

A-74 nearly collided with the ice shelf it split from last February. Such a strong impact may have released an even larger iceberg.

People who received a booster Johnson & Johnson COVID-19 vaccine six to eight months after their initial dose had a nine-fold increase in antibodies, according to clinical trial results.

The Food and Drug Administration granted full approval to Pfizer-BioNTech's COVID-19 vaccine on Monday (Aug.23). It's the first COVID-19 vaccine in the U.S. to be fully approved.

Investigators are considering the possibility that the couple, their one-year-old daughter and their dog were exposed to toxic algae.

A group of scientists has grown mini brains that have something their real counterparts do not: a set of eye-like structures called "optic cups" that give rise to the retina

U.S. health officials are expected to recommend that people receive an additional COVID-19 vaccine dose eight months after their second dose.

Three volcanoes in Alaska's Aleutian islands are erupting simultaneously, but are currently not a threat to local communities.

There's still much that’s unknown about the subtle impacts a typical COVID-19 infection may have on the body and the nervous system.

The COVID-19 vaccines that are used in the U.S. are highly effective. But sometimes, the coronavirus can still infect people who are vaccinated, causing so-called breakthrough infections.

The FDA is planning to update the emergency use authorizations for Pfizer and Moderna's COVID-19 vaccines to include a third dose for immunocompromised people.

Turkey continues to battle dozens of intense wildfires that have now killed eight people and countless animals.

The study examined nearly 100,000 people who took COVID-19 swab tests at home between June 24 and July 12.

Researchers found that dogs react differently to false information given to them by a misinformed human than they do to a human who is flat-out lying to them.

New York City will become the first city in the U.S. to require proof of vaccination for such activities.

The coronavirus delta variant may be as contagious as chickenpox and cause more severe illness than previous variants, CDC says.

It's not totally clear what these massive strings of DNA do, but they may help supercharge the organisms' ability to break down chemicals in the soil.