Searching for 'our alien origins' By Andrew Thompson BBC Horizon Dr Wickramasinghe thinks life could have originated in space In July 2001, a mysterious red rain started falling over a large area of southern India. Locals believed that it foretold the end of the world, though the official explanation was that it was desert dust that had blown over from Arabia. But one scientist in the area, Dr Godfrey Louis, was convinced there was something much more unusual going on. Not only did Dr Louis discover that there were tiny biological cells present, but because they did not appear to...