Perhaps it’s the biggest question science has left to answer, how did life begin? Now, molecular biologists in Cambridge university have discovered tiny molecules of RNA which they say might provide some clues. Science journalist and author Philip Ball explains what we know and whether we’ll ever find the origins of life on earth.
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When she received a phone call saying a womb had been donated and a transplant was possible, Bell remembers being "in complete shock" and "really excited".