On this week's programme, Quentin Cooper speaks to Leila Battison, part of the team who have discovered fossils of some of the first life forms on Earth in Loch Torridon in northwest Scotland. The research could change the way we think early life evolved. Also, Dr Drew Endy the director of BIOFAB, the world's first open source synthetic biology factory, explains how he hopes to provide generic genetic parts to bioengineers to speed up developing new organisms. Quentin goes to the Royal Observatory in Greenwich to see one of the oldest chronometers in pieces - it's being studied as part of preparations for the 300th anniversary of the Longitude Act in 2014. Finally Doug Millard, the Space Curator from the Science Museum talks about Yuri Gagarin and the technology used to blast him into space.
The producer is Ania Lichtarowicz.