Food for thought. Roswell debris found, and analyzed. News Briefs 04-05-2009 Food for thought. Roswell debris found, and analyzed. Astronaut Edgar Mitchell, Uri Geller and the curious case of the reappearing tie-clip . Dinosaurs survived extinction for another 500,000 years in a remote ‘Lost World’. Body of 37,000-year-old baby mammoth is starting to reveal insights about ice age beasts . A new genetic survey of people in Africa suggests that the borderland where Angola and