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 ...

Rebecca Bowe: Military scientists carried out experiments at this naval base using radioactive material, to study the health effects of exposure to radiation. These days, neighborhood activists find ...

Add Yahoo as a preferred source to see more of our stories on Google. Photo: Naval Radiological Defense Laboratory; Fang family San Francisco Examiner photograph archive. Creative Commons Attribution ...

Scenes from the nuclear theater of a long cold war: In the 1940s and '50s, when Americans still trusted their doctors and their government, researchers subjected hundreds of ill-informed people to ...

The Manhattan Project that built the atomic bomb wasn't without its own dangers. Experiments on a so-called "demon core" of plutonium caused the deaths of two Manhattan Project physicists. Both ...

Pacific Northwest National Laboratory chemist Isaac Arnquist examines the ‘coupons’ of ultra-low radiation copper cables specially created for sensitive physics detection experiments. Background ...

Newly developed ultra-low radiation cables reduce background noise for neutrino and dark matter detectors. Imagine trying to tune a radio to a single station but instead encountering static noise and ...

Uncle Sam conducted several pointless and destructive experiments on his own people during the Cold War. The most infamous was MKUltra, the CIA's project to develop procedures for mind control using ...