PARIS (AFP) - Genetic material from outer space found in a meteorite in Australia may well have played a key role in the origin of life on Earth, according to a study to be published Sunday. European and US scientists have proved for the first time that two bits of genetic coding, called nucleobases, contained in the meteor fragment, are truly extraterrestrial. Previous studies had suggested that the space rocks, which hit Earth some 40 years ago, might have been contaminated upon impact. Both of the molecules identified, uracil and xanthine, "are present in our DNA and RNA," said lead...