Paul Davies (17)

In an illustrated lecture, Davies argues that we need to get away from the “radio message for mankind” concept established in the 1970s and instead enlarge the search for signs of alien civilizations. He discusses potential ramifications that contact with aliens would have. He also reveals the existence ... (more)of a “shadow biosphere” that would prove that life on Earth happened easily and fast and so would be likely to occur on all Earthlike planets.