Public health advocates say the US Navy knew for almost a year that tests had detected dangerous levels of plutonium in the ...

Shocking detection of plutonium-239 at Hunters Point sparks outrage over Navy's 11-month delay. Explore health risks, ...

After decades of delays, workers at the Hanford nuclear site this October finally began treatment of the 56 million gallons ...

Hunter’s Point Naval Shipyard. Photo by Christopher Michel. Radioactive plutonium was found in the air above Bayview-Hunters Point at twice the federal government’s recommended levels, according to a ...

A packed and at times tense community meeting in San Francisco’s Hunters Point on Monday drew frustration from residents after learning the U.S. Navy waited 11 months to alert regulators about a test ...

The fuel rods at all six reactors at the stricken Fukushima Dai-ichi complex contain plutonium — better known as fuel for nuclear weapons. While plutonium is more toxic than uranium, other radioactive ...

It’s widely known that a smoke detector is a good ionizing radiation source, as they contain a small amount of americium-241, a side product of nuclear reactors. But what about other sources? [Carl ...

Plutonium can be used to make nuclear bombs. But it can also be recycled and used as a fuel in nuclear reactors. According to the authors of a Nature editorial, the UK—which has the largest civilian ...

WASHINGTON — The plutonium that is the key ingredient in thousands of nuclear weapons sidelined in the new arms control treaty between the United States and Russia is likely to be around for decades ...

It appears that the U.S.'s plutonium-238 shortage is coming an end. The radioisotope is crucial for fueling long-term deep space missions, but as of 2017, a shortage was on the horizon. But ...

In 1977, the Voyager 1 spacecraft left Earth on a five-year mission to explore Jupiter and Saturn. Thirty-six years later, the car-size probe is still exploring, still sending its findings home. It ...