Apr 30, 2009 | 43
Eminent physicist Freeman Dyson raised eyebrows a month ago when he told the New York Times Magazine that a little extra carbon dioxide—and global warming—might turn out to be good for the planet. So when we saw his name on an event around the corner from Scientific American's offices we figured we'd go hear his criticisms, dubbed "Climate Disasters, Safe Nukes and Other Myths," firsthand.
At the luncheon put on by the Cato Institute, when the talk turned to climate change Dyson started out sounding as if the whole thing was overblown, noting that the prospect of global warming is a problem that should be taken seriously. But he also said that no one should be alarmed about it yet.
Sep 9, 2008 | 3
The "ultra-secure uranium warehouse of the future" in Oak Ridge, Tenn., is now built, if not quite ready for work. Part of Complex 2030—the Bush Administration's ambitious and little known plan to revamp the nation's aging infrastructure for building nuclear weapons—the warehouse will provide one location for the nation's supply of the highly enriched uranium (HEU) that makes for a powerful nuclear bomb.
Two years of testing remain before the HEU will actually show up, but the $549 million facility will replace "multiple" current storage locations scattered throughout the country. The HEU depot used 92,000 cubic yards of concrete, 5,800 tons of rebar and contains more than 1.5 million feet of wiring—and will ultimately be one of two locations used to store and process "thousands of containers of material," according to the National Nuclear Security Administration, the branch of the U.S. Department of Energy tasked with dealing with the nation's nuclear arsenal.
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