The greatest long-term threat to U.S. national security is not terrorists wielding a nuclear or biological weapon, but the erosion of America's place as a world leader in science and technology, according to the Pentagon's No. 2 official. Deputy Defense Secretary Gordon England told a military and industry audience last week that the loss of U.S. academic standing in science and technology is "highly disturbing." What causes him to loose sleep when thinking about challenges to American primacy around the...