WASHINGTON, Oct. 24 (UPI) -- NASA scientists in Washington are re-thinking whether they missed life on Mars when they conducted initial Viking experiments 30 years ago. The experiments -- in which samples were either vaporized or examined for for radioactive carbon -- may not have detected lower levels of organic life ugg stiefel, ABC News said Tuesday. To see if this theory is plausible Mbt schuhe, scientists are testing soil from Antarctica's Dry Valleys bottes ugg, and Chilean and Libyan deserts. Despite the areas' desolate conditions -- torrid sun, frigid nights and little moisture -- researcher said these places sustain life, ABC said. But in the Viking probes tested samples, no life was found Les ugg, ABC News said. More recent probes of the Martian surface found evidence of water mens moncler jackets, but if life existed, or exists Ugg boots, NASA researchers said the probes could not directly test for it, ABC News said. NASA researchers said the next two Martian probes, scheduled to land in 2008 and 2010 mbt schuhe g��nstig, will include analytical methods to search for life on the planet, ABC News said.