radiation exposure

Japan's Nuclear Crisis: U.S. Sales of Radiation Pills Boom

Amid panic about the possibility of a radioactive fallout from Japan, Geiger counters and potassium-iodide pills -- which can help prevent radiation-caused thyroid cancer -- have been flying off the shelves, sometimes at unscrupulous prices.

As Nuclear Fears Mount, Some Zero In on Bio-Defense Sector

As Japan's nuclear crisis deepens, Wall Street may begin to focus on a small group of almost-ignored young biotechs. Known as the bio-defense group, these companies develop products that help protect the population from radiation leaks resulting from nuclear accidents or attacks.