What It’s Really Like to Be a Spy

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What It's Really Like to Be a Spy         Two CIA veterans explain what it takes to work for the Agency. Read More WATCH VIDEO: Can You Really Detect a Lie? As it turns out, probably not. Deception is a tricky thing. Opportunity Breaks NASA's 40-Year Roving Record         After nine years of hard Mars roving, Mars Exploration Rover Opportunity has broken a 40-year-old extraterrestrial distance record. Read More WATCH VIDEO: Martian Methane We've discovered the source of methane on Mars -- what's the big deal? Aww, These Two Robots Love Each Other         Even though they disagree sometimes, these two robots share a unique bond. Read More WATCH VIDEO: The Plan to Stop Killer Robots Many fear the 'Terminator' of science fiction is close to becoming reality. Dust Devils Rip Up Mars' 'Etch-A-Sketch' Surface         In side-by-side comparisons of observations of the same Mars region years apart, the active Martian atmosphere acts like an Etch-A-Sketch, rubbing out dust devils' tracks only for them to re-form years later. Read More WATCH VIDEO: 3 Questions: Mars We answer three tough questions about the Red Planet. Follow Discovery News on Facebook! Get your sci-tech headlines all day on Twitter too! Follow us @Discovery_News. At Discovery we value your privacy. If you would like to be removed from Discovery News emails like this, please click here to our subscription center, where you can manage your account. We recently updated our privacy policy. This policy is effective as of 10/30/07. To see new policy click here . Discovery Communications, LLC One Discovery Place Silver Spring, MD 20910 © 2013 Discovery Communications, LLC