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1. (Biography) Sir David. born 1926, British naturalist and broadcaster; noted esp for his TV series Life on Earth (1978), The Living Planet (1983), The Life of Birds (1998), The Life of Mammals (2002), and First Life (2010)
2. (Biography) his brother, Richard, Baron Attenborough. 1923–2014, British film actor, director, and producer; his films include Gandhi (1982), Cry Freedom (1987), and Shadowlands (1993)