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The 2.5 million-year-old fossils of Australopithecus garhi – a long-legged, tool-using meat-eater discovered in Ethiopia – shed new light on human evolution. At the International Symposium on Space Travel in Bremmen, Germany, the hot topic was space tourism and orbiting hotels. A warning about the destructive effect of global warming and pollution on the world's mountain cloud forests. The Science Museum in London is planning an exhibition of most useful everyday technology within its new Making of the Modern World gallery.