Amid rising global conflicts and concerns about nuclear weapons, some of the world's most radioactive locations pose severe ...

Florida, where NPR reports state lawmakers have passed a bill (HB1191, which awaits governor Ron DeSantis's signature) ...

A weathered sign in the Minnesota River Valley proudly proclaims: “World’s Oldest Rock.” Erected in 1975, it marks a 3.8-billion-year-old gneiss — or so scientists thought.

Some minerals in rocks and organic matter (e.g., wood, bones, and shells) can contain radioactive isotopes. The abundances of parent and daughter isotopes in a sample can be measured and used to ...

Many chemical elements in rock exist in a number of slightly different forms, known as isotopes. Certain isotopes are unstable and undergo a process of radioactive decay, slowly and steadily ...

These radioactive elements in minerals and ores originally found ... The activity concentrations of the radionuclides in rocks and soil found in the nature are generally low. Certain minerals, ...

Phosphogypsum is described by the U.S. Environmental Protection Agency (EPA) as "a waste product from manufacturing fertilizer." Phosphate rocks are dissolved to create phosphoric acid, which is ...

Explain that the pennies, dice, and sugar cubes represent atoms of different radioactive isotopes. The boxes symbolize rocks containing those isotopes. Each team's mission is to determine the half ...