Chernobyl's Hot Zone Holds Some Surprises

The nuclear crisis in Japan has evoked memories of the 1986 Chernobyl disaster. Robert Baker, a biologist at Texas Tech, who co-directs the Chernobyl Project, has been studying mammals in Chernobyl for two decades. Baker tells Linda Wertheimer his group has found next to no signs of radiation poisoning or cancer in subsequent animal generations there.