Ed Sykes is hosting a lecture at University College London called Penisology. Everything you never wanted to know about sex. He talks about the strange world of animal mating and looks at the science of human sex.

Thomas Steitz of Yale University is a winner of this year's Nobel prize for chemistry. He tells us how he got the news, and we discuss whether the awards need to be updated. We also check the progress of Barack Obama's science promise.

Environment correspondent David Adam looks at what a Conservative government would mean for science in Britain.

Nasa's LCROSS mission has bitten the dust. The two missiles plummeted into the moon's surface last week. We join science correspondent Ian Sample as he live-blogged the event.

WARNING: contains explicit sexual language

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