Where does the Earth's water come from? It's thought that it arrived from space, carried by comets. But recent research suggests otherwise. Professor Katrin Altwegg is principal investigator in charge of Rosina - the tool on the recent Rosetta mission that is charged with answering this mystery.

DNA can survive a trip into space, according to a recent experiment. Dr Lewis Dartnell, an astrobiologist from Leicester University, explains the implications.

What sounds do the oceans make? Anand Jagatia reports. Dr Julius Piercy from the University of Essex listens to coral reefs. And his recent work could help us harness sounds to help restore damaged and dying coral reefs.

This week, the new Nobel laureates head to Stockholm to pick up their medals. Among them is Norwegian neuroscientist Professor May-Britt Moser. The question on nobody's lips; what was she wearing? Which is a shame because she wore a Matthew Hubble dress featuring Grid Cells - our brain's positioning system. Discovering these grid cells won May Britt her Nobel prize. Polymer scientist Professor Tony Ryan from University of Sheffield talks fashion and science with Adam Rutherford.

Producer: Beth Eastwood.

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