Reaffirming a previous decision, the U.S. Energy Departmentwill resume production of plutonium-238 as an energy source for spacecraft andsome national security issues, which have not been disclosed at this time. Whilenot used for nuclear weapons, P-238\u2019s steady release of heat during decay makesit a valuable source to produce electricity in spacecraft and satellites thatcan\u2019t rely on the sun for energy. The Washington Post reports that the decisionwas made because current stocks will be depleted by 2010. The Energy Departmentalso plans to consolidate production activities at the government\u2019s IdahoNational Laboratory to increase security. Read more.