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The heatwave in Europe in the summer of 2013 was "human-induced warming" not a random event, say scientists, and we are greatly increasing the risk of more heatwaves. How Australia's predators, such as snakes, are evolving to deal with the poisonous imported cane toad. Stress is bad for you – at a fundamental molecular level. How do people acquire "pefect pitch" and does what language you speak matter?