In this lesson, students will investigate the nature of radioactivity and the effect of both distance and shielding materials on different radioactive sources using a Geiger-Muller tube with a counter ...

But how do you decontaminate objects and people that have been exposed to dangerous levels of radiation? To answer that question, it's important to understand the basics of how radioactivity works.

Radioactive tracers, which have revolutionized medical and biological research, are now going to work in industry. This week Arthur D. Little, Inc. of Cambridge, Mass, told how it used the tracer ...

Borne on the winds that sweep out of Russia, radioactive dust from the Soviet Union’s latest super H-bomb (TIME, Dec. 5) descended on its neighbors. The Dutch army reported a “high content of ...

Some wild boar hunted in German forests have radiation levels that exceed the limit deemed safe for human consumption. New research suggests that it’s not just because of Chernobyl.