As millions move to online social networks, so do computer threats.
The US Air Force has spent $4.3 billion on a laser-equipped plane that it hopes can shoot down ballistic missiles in flight. The first test shot may come this year.
With enough investment, geothermal power could satisfy 10 percent of the US energy diet, energy experts say.
Column: Tom Regan rolls through the year’s clever devices and creative decisions
It will be the 24th leap second since 1972, keeping clocks in sync with Earth’s rotation.
The Tesla Roadster, launched in 2007 in the US, entered the European market this year. Here is a look at the car:
But environmentalists worry that an expanded grid will help carry more dirty power.
New designs could power some remote areas by 2012.
Musicians turn to new software to teach and collaborate over the Internet.