Word: uranium
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...article, for example, profiles a Phillips Brooks House program which reaches out to inner-city Boston Native American youth. Another critiques that negative health effect of uranium mining on the Navajo nation over a 30-year period...
...serious safety questions. Last week police arrested a train rider for carrying radioactive matter. Afterward a research facility said the man was its courier, claimed the material posed "no danger" and admitted it regularly used passenger trains to transport radioactive substances. In November a thief was arrested after carrying uranium-235 on the subway, and in December two men were arrested after riding with a stolen cache of potentially explosive cesium. Both materials can be deadly...
...professor repeatedly mentioned experimentshe did with radioactive uranium...
When scientists began working on fusion half a century ago, they had no idea the process would be so hard. It had been relatively easy to get energy through nuclear fission, the breaking apart of such heavy atoms as uranium. That led to A-bombs and today's nuclear power plants. But fusion -- the forcing together of light atomic nuclei, like those of hydrogen -- can release even more energy. The problem is that hydrogen nuclei carry a positive electric charge, and thus they repel one another; they have to be slammed together with terrific force before they will stick...
...radioactive ingredient used in many nuclear warheads -- to build 87,000 "primitive" bombs by 2003. Weapons dismantled by the U.S. and the former U.S.S.R. will account for 199 tons of the lethal substance. Adding to the problem will be more than 300 tons of plutonium extracted from spent uranium fuel retrieved from nuclear power plants. "Separated plutonium held in inventory," says the report, "could be diverted and reworked to make it weapon-ready in only days or weeks...