Horizon: We Are the Aliens

In this eye-opening documentary first aired in 2006, BBC's 'Horizon' takes a look at the scientists on a mission to get to the bottom of the origins of life on Earth, from a team in Texas who are building a robotic submarine called DEPTHX to explore a moon of Jupiter, to southern India where scientists are investigating a mysterious red rain which fell for two months in 2001. According to local scientist Godfrey Louis, the rain contains biological cells unlike any he had seen before, with no DNA and the ability to replicate at 300°C. Louis has come to the conclusion that the cells may be extra-terrestrial in origin!



Part 1: http://uk.youtube.com/watch?v=9nQPejO...
Part 2: http://uk.youtube.com/watch?v=6zlxeGR...
Part 3: http://uk.youtube.com/watch?v=eX4nnGp...
Part 4: http://uk.youtube.com/watch?v=v0IY8WB...
Part 5: http://uk.youtube.com/watch?v=dNczllA...