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Study of 19th-century women in Canada shows a connection between month of birth and reproductive success and longevity – why were the most successful individuals born in June and September and the least successful in October? Capuchin monkeys exhibit a sense of fairness. What is the evolutionary purpose of human warfare? The Galileo spacecraft, launched in 1989, is about to self-destruct as it heads towards the surface of Jupiter at the end of its mission.