It concluded that the subject was 83% happy, 9% disgusted, 6% fearful and 2% angry, journal New Scientist was told.

In the world of prescription narcotics, Google is the biggest trafficker.

Using machinery that looks like giant aluminum film developers, a company called Miasole in the heart of Silicon Valley is rolling out sheets of stainless steel coated with materials that will convert sunlight into electricity.

Environmental group Greenpeace has named Lenovo as the most ecologically friendly electronics maker in the world, while the lowest marks went to Apple Computer for its contribution to "toxic tech"

Thee Japanese scientists develop thin battery that can survive over 1,000 recharge cycles

IBM has built a prototype optical transceiver chipset it says will let people download movies or other data eight times faster than current technology.

Several small companies are developing new engine technologies and advanced automotive designs that promise to deliver 100 miles from a single gallon of gas. The proposals run from the simple -- reduce weight, improve aerodynamics -- to the incredible (one company wants to borrow a few tricks from jet engines).

The home entertainment market is still wrestling with having two HD optical formats, HD DVD and Blu-ray Disc, but soon it will have to deal with another. UK-based New Medium Enterprises (NME) has developed the Versatile Multilayer Disc (VMD), a new optical-based format capable of storing 20GB of data.

Israeli killer-robot maker Elbit Systems today unveiled the "Viper," a small ground-crawling combat machine "roughly the size of a small television".

Emotiv Systems unveiled on Wednesday a brain/computer interface system with a helmet and software applications at the Game Developers Conference in San Francisco.