Radiation

The official Soviet death toll for the accident stood as just 31, despite its status as the worst nuclear disaster in history.

Piketon, Ohio, residents suggested a nearby gaseous diffusion plant might be responsible for the uranium.

Roscosmos will try to regain control of the satellite Monday.

The Nuclear Regulatory Commission checked safety systems at the Alabama plant to determine why a diver received a dose alarm during underwater work in one of the equipment pits.

South Korea's presidential office said it "conducted the radiation test" on two tons of pine mushrooms sent by North Korean supreme leader Kim Jong Un.

Thermal anomalies are areas of the Earth which satellites flag as "unusually warm."

Human deep space exploration is on the verge of becoming a reality, but there are several limitations we must overcome first.

The science on the risks of prolonged exposure to cellphone radiation remains inconclusive.

The searing hot ball of gas at the heart of our planetary neighborhood is home to almost all the mass of the solar system—but it's getting lighter all the time.

Most people apply sunscreen in a layer so thin it provides only 40 percent of its purported SPF rating.

Wild dogs, which have thrived since the nuclear accident, forming their own society amid the asphalt of the vast industrial complex, have captured the hearts of cleanup workers. A charity is now bringing them to America.

Researchers implanted cancer cells in mice and then stimulated the reward circuits in their brains every day over two weeks. They observed a powerful response.

Residents fear the contaminated soil's effects on their health and livelihoods.

Russia's submersible drone, known to Russia as Poseidon and to the U.S. as Kanyon, may change nuclear warfare as we know it.

A 2008 test showed that a 52-foot-high tsunami could strike the Fukushima nuclear plant, but bosses delayed building a protective seawall.

Space has a lot of ways to kill you, and one is getting worse.

Convicted Russian spy Sergei Skripal's "substance exposure" is drawing comparisons to the 2006 death of Russian intelligence agent Alexander Litvinenko's acute radiation poisoning.

The latest subject revealing our Earth's past: bonsai-like pine trees.

After hundreds of thousands of years, signs of this change are finally apparent.

Walter Jordan's is one of several deaths at the center of an ongoing legal fight over inmate health care in Arizona -- and a window into how states use private companies to handle medical services for prisoners in an age of cash-strapped budgets.

The tiny water bears are famously quite tough.

The guidelines provide some tips for reducing exposure to radiation linked with phones—despite little evidence that radiation has any effect on human health.

A plant near the most seriously polluted area suffered one of the worst ever radioactive accidents in 1957.

Thousands of soldiers were deployed in the drills, some in hazmat suits and gas masks.

The Marius Hills Skylight Moon shelter could be used to protect astronauts from radiation.

The estimated cost of the long-term cleanup following the nuclear disaster is $192 billion.

Japan's "Little Sunfish" brought back never-before-seen footage of the Fukushima nuclear plant, which has claimed a number of prior devices.

The three executives are expected to plead not guilty.

New research reveals how flying exposes us to cosmic rays. It's time we were aware of the risks.

Space probes have found a barrier resulting from low frequency radio waves which could shield us from geomagnetic storms.