A court orders YouTube to provide Viacom video user logs in copyright case.

Global warming may push future heat waves beyond 120 degrees by 2100.

Spacecraft's glitch may mean one final sample bake.

Sexual predators are using gaming consoles to find victims online.

G-8 climate scorecard ranks U.S. last among world's largest economies.

A brain study shows that thinking happy thoughts could dampen cravings.

Pew study finds many wouldn't upgrade even if broadband were available.

Microsoft to sell Office, PC security software by subscription for $70 a year.

Nintedo Wii Console Far Outsells Sony's PS3 6-to-1 in June in Japan.

Thousands worldwide are preparing for the apocalypse in 2012.