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The latest issue of Scientific American has been released, with details and free content available at the Sciam website. Free articles available from the July 2005 issue include Michael Shermer’s skeptical take on Ray Kurzweil’s eternal life ideas, recent advances in the fight against Parkinson’s Disease, the mysteries of mass, and a detailed report on stem cells. The cover story for this issue (which is not free) is on the feasibility of underground ‘carbon traps’.