Curiosity has stretched its neck, flexed its arm and wiggled its toes – and it’s set to make its first drive on Mars after engineers at Jet Propulsion Laboratory send it instructions tonight. But in its self-examination, the Mars Science Laboratory has found more than a small bruise on its one-ton body. Curiosity has been testing its cameras, laser and other functions since landing on the Red Planet on Aug. 5. NASA officials announced Monday that the rover had successfully unfolded its arm. The robotic arm holds what mission manager Michael Watkins called a veritable “Swiss army knife” of tools...