Krypton gas clue to North Korean nuclear progressElevated levels of krypton-85 had been discovered in the air above the North Korean border. This is a gas with a half-life of 10.7 years that is created along with plutonium by the fission of uranium fuel in a reactor. The fuel is reprocessed to separate out the plutonium by dissolving it in acid, but this also releases the krypton-85.
Nuclear LandminesIn an article on newscientist.com, the UK planned to bury 10 nuclear landmines in Germany, declassified army documents from the 1950s reveal.
The original article can read here.
North Korea One Step Closer...North Korea has told the United States that it has finished reprocessing used nuclear fuel into bomb-grade plutonium and U.S. officials are seeking to verify the claim, the White House said.
North Korea had 8,000 spent fuel rods as part of a plutonium-based nuclear weapons program at the Yongbyon nuclear site that was frozen under a 1994 nuclear deal between North Korea and the United States.
If those fuel rods were efficiently converted, they could produce enough plutonium for a half-dozen nuclear weapons. North Korea may already have one to two nuclear devices.
To learn more about the nuclear crisis in North Korea, visit our special report.