NPR's Mike Shuster reports the Russian navy has begun a rescue operation to save the 116 men trapped in the nuclear-powered submarine "Kursk" at the bottom of the Barents Sea. The Russians are trying to send a rescue capsule down to the stranded sub. The first try to do this failed. It's a difficult, time-consuming operation, particularly since the sub is buffeted by strong currents. The capsule can bring up only 20 men at a time and must ascend very slowly, to avoid the risk of decompression sickness.
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