This week, the first group of 100 people were allowed to return to their homes within the restricted zone circling the damaged Fukushima Dai-ichi nuclear plant in Japan and retrieve some of their cherished possessions.
Radiation levels climb in area surrounding Japan's Fukushima nuclear plant.
The nuclear crisis in Japan has renewed interest in the 1986 nuclear meltdown at Chernobyl in Ukraine. Science correspondent Miles O'Brien travels to the site of the world's worst nuclear disaster, which is approaching its 25th anniversary.
Contaminated water has spread beyond a damaged building at the Fukushima nuclear plant.
A synopsis of the day's other top news stories.
As Japan struggles to bring the damaged Fukushima nuclear reactor under control, new questions are surfacing on where U.S. nuclear development stands. Science correspondent Miles O'Brien reports.
Japanese officials warned Tokyo residents to avoid giving tap water to infants after tests revealed radiation levels exceeded safe limits. Tom Clarke of Independent Television News reports on the latest problem stemming from the damaged Fukushima nuclear plant.
American and Japanese officials have offered sharply different assessments of the situation at the damaged Fukushima nuclear power plant. Judy Woodruff weighs the threat of the spend fuel pools with the University of Southern California's Najmedin Meshkati and the Institute…
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