Los Angeles Times From a Distant Comet, a Clue to Life New York Times For the first time, a building block of proteins — and hence of life as we know it — has been found in a comet. That adds to the prevailing notion that many of the ingredients for the origin of life showered down on the early Earth … Life On Earth May Be Extraterrestrial InformationWeek Comet carries a building block of life ZDNet NASA: Extraterrestrial sample holds ingredient for alien life Register Reuters . . . → Read More: From a Distant Comet, a Clue to Life – New York Times