There's a man who does a lot of biology shows (I think also geography shows) and has been doing them for at least 15 years. Last year he did one on the large insects that used to inhabit the Earth due to the higher oxygen levels. He's fairly well known. I just needs his name so I can write an article for our school magazine.
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David Attenborough
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Bill Nye? :D ahaha
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Bill Nye the Science Guy?