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Could the newly discovered Earth-like planet Gliese 581C that orbits a red dwarf star support alien life? The composition of the newly discovered mineral Jadaratie almost matches the specifications of Superman's Kryptonite – "I nearlly fell off my chair," said the Natural History Museum's geologist. Promising news about a drug to treat inherited diseases like cystic fibrosis and muscular dystrophy. Plus, discovering where walruses go in summer, and learning about what happens in a drug addict's brain.