A drone armed with a warhead hit the outer protective shell of Ukraine’s Chernobyl nuclear plant. Friday's strike damaged the shell and briefly started a fire.

The IAEA, which has a team stationed at the site, did not assign blame but confirmed that its observers heard an explosion.

Radioactive materials are found naturally in the Earth. But even so, saying an area is radioactive can conjure up images of ...

The term mental hygiene has a long history in the United States, having first been used by William Sweetzer in 1843. After the Civil War, which increased concern about the effects of unsanitary ...