Who is up for a challenge?
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Does the Cambrian Explosion challenge evolution by natural selection?
Started by Alan McDougallBoard Geology, Palaeontology & Archaeology |
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Creationist Challenge (proving the existence of light)
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For real maths geeks - fancy a challenge?
Started by imatfaalBoard General Science |
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Challenge Britain’s Change-Makers
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Is this challenge to the equivalence principle valid?
Started by jeffreyHBoard Physics, Astronomy & Cosmology |
Replies: 21 Views: 4904 |
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