The most radioactive elements found on Earth include Polonium, Radium, and Radon. Learn why elements with short half-lives, ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

ST. PAUL, Minn. – Xcel Energy says it has fixed the pipe leak at its nuclear power plant in Monticello and will reopen it soon. Last fall, at least 400,000 gallons of water containing radioactive ...

Scientists have revealed key properties of radioactive promethium, a rare earth element with poorly understood applications, using a groundbreaking new method. When you purchase through links on our ...

What do a capsule in Australia, a cylinder in Thailand and a camera in the US have in common? All three contained radioactive material and went missing over the past three months, in what experts say ...

Polly Arnold is drawn to challenging problems at the far reaches of the periodic table. “It’s all about the f block,” she says of the work in her group, which is split between the University of ...