Japan Strains to Thwart Nuclear Meltdown at Three Reactors

Japan Strains to Thwart Nuclear Meltdown at Three Reactors More

Authorities worked to bring three nuclear reactors under control after cooling systems were knocked out when a massive earthquake struck Japan. Gwen Ifill talks to NewsHour correspondent Miles O'Brien and David Brenner of Columbia University's Center for Radiological Research about the science behind Japan's nuclear power.

AIR DATE 3/14/11