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July 17, 2008, 4:22 pm

Bodily fluids in space

We all have to do it, and so do astronautes: getting rid of urine. This bodily fluid contains a very broad spectrum of molecules, which we no longer need in our bodies. Handling these molecules can be a problem in spacecrafts, which is why NASA has to collect big amounts of urine for their research...

[Guardian]