Chad Hurley, the chief executive of YouTube, spoke about how the rapidly growing video Web site will cope with advertising, copyright law and other challenges brought on by its success.

NASA Loses Contact With Mars Global Surveyor Orbiter

I'd like to call your attention to our top story today. It describes a serious gap in U.S. government cybersecurity. The article shows how thousands of computers in federal and state governments--including defense-related agencies--are infected by softwar...