Mast Cells might help process Venom

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Researchers are surprised to find mice's mast cells may be instrumental in breaking down some venoms. New infrared survey of the sky shows astronomers galaxies formed before Earth was formed. "Green" gadgets, like a biodegradeable mobile phones, on show. Why the Human Variome Project is looking at the differences in human genes, and how Africans are the source of the most and the oldest variations. Plus, the Amazonian knifefish's lessons in propulsion for submarines.