It might not just be men who are from Mars, claims a new study which suggests that all life on Earth actually began on the red planet. An element believed to be crucial to the origin of life would only have been available on the surface of Mars, it is claimed. Geochemist Professor Steven Benner argues that the 'seeds' of life probably arrived on Earth in meteorites blasted off Mars by impacts or volcanic eruptions. Professor Steven Benner will tell geochemists gathering today at the annual Goldschmidt conference that an oxidised mineral form of the element molybdenum, which may have...