Latest Human Nature columns: 1) Guns, bombs, and Virginia Tech. 2) The global market in human organs. 3) The evolution of brains and morals. 4) Machines that read your mind. 5) Invasion of the naked body scanners. 6) The future of pain-beaming weapons. 7) Gay sheep and human destiny. 8) More on gay sheep. 9) The power to shrink human beings. 10) The first human embryo factory.
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