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Human ancestors were making art 350,000 years ago, acording to Twin Rivers site in Zambia where iron-based pigments and tools have been found. A new simulation of the future of Amazonia predicts a 50% fall in rainfall in 100 years time. The hurricane season in the Atlantic is about to begin – will global warming cause more and worse storms? Geoffrey Miller talks about sexual selection and his book The Mating Mind: How Sexual Choice Shaped the Evolution of Human Nature.