The U.S. Justice Department sued Sheriff Joe Arpaio on Thursday, saying the Arizona lawman refused for more than a year to turn over records in an investigation into allegations his department discriminates against Hispanics.

James J. Lee, the suspected gunman who took hostages at the Discovery Communications building in Maryland, apparently had a long history of contempt for company, which includes the Discovery Channel, TLC, Animal Planet, Science Channel and Planet Green networks.

Science editor Alan Boyle's Weblog: The "Ishmael" books are aimed at encouraging radical social change — but their author says hostage-taking is not the change he had in mind.

Has the reclusive heiress Huguette Clark signed a will? Yes, her attorney says. Msnbc.com's Bill Dedman reports.

Two Yemeni men arrested on suspicion they may have been involved in an airline terrorism plot are released without charge when no evidence was found, Dutch prosecutors say.