Anticipating the Supreme Court's expected late June decision in District of Columbia v. Heller, which will decide the constitutionality of a D.C. law restricting gun-ownership rights, many analysts have turned to the Founders' writings in an effort to understand the Second Amendment. What analysts need to do - recognizing that language and word usage change over time - is turn to America's first dictionary. ...more

June 9, 2008

Next year's flu vaccine is getting a complete overhaul to provide protection against three new and different influenza strains - hopefully better protection than this year's version. ...more

February 22, 2008

New data on an experimental AIDS vaccine that failed to work show volunteers who got the shots were far more likely to get infected with the virus through sex or other risky behavior than those who got dummy shots. ...more

November 8, 2007

State Department investigators offered Blackwater USA security guards immunity during an inquiry into last month's deadly shooting of 17 Iraqis in Baghdad - a potentially serious investigative misstep that could complicate efforts to prosecute the company's employees involved in the episode, government officials said Monday. ...more

October 30, 2007

President Bush and other Republicans stepped up their attacks on Democratic legislation that would require more oversight of surveillance within U.S. borders that is directed at foreign targets, escalating a partisan battle over the boundaries of U.S. spying. ...more

October 11, 2007