Sudden changes in space weather, such as solar flares, for example, could have significant health implications for crew and passengers.

What if plants in the area surrounding a nuclear reactor could act as radiation detectors, with the help of a drone?

Radiotherapy takes many forms: from directing powerful high-energy beams toward specific areas of the body to placing radioactive seeds right next to tumors.

Japan has undertaken extensive efforts to decontaminate land in Fukushima – whether they were they right to do so is a complex question.

Space can damage everything from your cardiovascular and nervous systems to your mental health – long voyages can feel isolating for many.

Nuclear weapons production and testing contaminated many sites across the US and exposed people unknowingly to radiation and toxic materials. Some have gone uncompensated for decades.

Depleted uranium munitions are bad news for enemy tanks, but are not nuclear weapons, and studies have shown that they pose low risks of radiation or chemical exposure.

Radiation from the brightest cosmic explosion ever seen may have been mixing with gas and dust around its dying star – making the signal last longer.

The International Atomic Energy Agency says the plant has enough water to last for several months. What happens afterward or if the remaining water is lost to the war could lead to a disaster.