'Smart window' maker Soladigm to build factory

Soladigm, which adds thin films to glass to block light and heat, plans a manufacturing plant in Mississippi to make its green building gear.

How to use App Tabs in Firefox (video)

Mozilla has given tabs some long-overdue love in the second Firefox 4 beta with App Tabs, a feature that annihilates your scramble to search for that one elusive open tab. Watch what it does in this How To video.

NASA hopeful, but not confident, about ailing Mars rover

Spirit, in electronic hibernation to endure a harsh Martian winter, has not phoned home since March 22, but engineers are hoping for a miracle from Mars.