Limb length, cancer, freezing water...

11 December 2008
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How temperature, rather than genetics, regulates limb length in mammals; nagging can save your life - single men are less likely to have prostate cancer screening; how X-ray crystallography has given an insight into what prevents eggs being fertilized by more than one sperm; new discoveries that may help control epilepsy and brain damage from a stroke. Plus, in 'Stuff and Non-Science', does boiling water really freeze faster than cold water?

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