Scientists have reported on some unusual things flying in space recently. In one paper, sperm, stored aboard the International Space Station for the last 5 years, has been brought back to Earth and used to fertilise eggs. Also, a group of glow-in-the-dark bobtailed squid headed spacewards to look at how microgravity affects their microbiome. Westminster University astrobiologist Lewis Dartnell talked Chris Smith through the different projects... Like this podcast? Please help us by supporting the Naked Scientists