Oops, this was a dupe.

Activists like Sidebotham say the real issue is not how to build more nukes but how to handle the old, decrepit plants and their huge stockpiles of radioactive waste. Most of the atomic plants in this country are reaching the end of their life span; seventeen have been decommissioned. And increasingly the question is what to do with the accumulated waste--the extremely radioactive spent fuel rods. This is dangerous stuff. If exposed to air for more than six hours, spent fuel rods spontaneously combust, spewing highly poisonous radioactive isotopes far and wide. This spent fuel will be hot for 10,000 years.

Since 1978 the Energy Department has been studying Yucca Mountain in Nevada as a possible permanent repository for atomic waste. But intense opposition has held up those efforts. In the meantime, the partially burned uranium is stored at the old power plants, in pools of water called "spent fuel pools." Lying near great cities, on crucial river systems, in small rural towns, these pools are potentially a far greater risk than a reactor meltdown. Scenarios for how terrorists might attack and drain them range from driving a truck bomb to crashing an explosive-laden plane into them.

Just after 9/11, when security at nuke plants was supposed to be high, lead pellets started raining down on the containment structure and guard shack at Maine Yankee, in Wiscasset. (The plant has since been decommissioned.) A group of four men in camouflage, armed and intent on killing, had infiltrated into a swamp and were firing weapons from somewhere in the reeds. This "cell" turned out to be four local duck hunters who had no idea they were hitting the power plant.