President Carter, shown here in 1979, speaks against a backdrop of solar panels at the White House. Activists used one of Mr. Carter's panels to help persuade President Obama to set an example by powering his residence with solar energy. (Associated Press)
This file photo released by Solar Design Associates shows the solar thermal system produced by the Harvard, Mass., company, installed on the roof of the White House pool cabana in Washington during the George W. Bush administration. The Obama White House on Tuesday, Oct. 5, 2010, will announce plans to install solar panels for the first time atop the White House's living quarters by spring 2011. (AP Photo/Solar Design Associates)
Members of the Swedish Royal Academy of Sciences, left below screen, announce that Russian-born scientists Andre Geim, left on screen, and Konstantin Novoselov, right on screen behind podium, share the Nobel Prize in physics for "groundbreaking experiments" with an atom-thin material expected to play a large role in electronics in Stockholm, Sweden Tuesday Oct. 5, 2010 (AP Photo/Scanpix Sweden/Maja Suslin)
In this undated photo, chunks of chemically processed rare earths are shown in Beijing. China's recent halt of exotic metal shipments to Japan amid a diplomatic spat has reverberated throughout the world's high-tech manufacturing hubs _ now on heightened alert to the risks of relying on one country for materials that do everything from helping hybrid engines run to creating the color red in televisions. (AP Photo/Kyodo News)
FILE - In this Oct. 3, 2006 file photo, producer and writer Stephen J. Cannell talks about the concentration of media ownership in the hands of a few large corporations at a hearing held by the Federal Communications Commission in Los Angeles. (AP Photo/Reed Saxon, file)
Target saleswoman set up a Apple iPad display at a Target store in Cupertino, Calif., Sunday, Oct. 3, 2010. The iPad went on sale for the first time at Target on Sunday. Target is the only stores outside of the Apple store that sells iPads in the U.S. (AP Photo/Paul Sakuma)
This image made on Thursday, Sept. 30, 2010 and released by Mattel shows Lily, a Schnauzer, wearing the Puppy Tweets device at Trixie & Peanut in New York. Puppy Tweets is an electronic dog tag with a sensor that you attach to your dog's collar. It detects your pet's movements and sounds and sends a variety of tweets to a Twitter page you set up for your dog on a computer or smart phone. You can invite all your friends to be followers too. (AP Photo/Mattel, Diane Bondareff) NO SALES
This image from video provided by the SITE Intelligence Group shows the still picture of Osama bin Laden shown on the video released on jihadist forums on Oct. 1, 2010. (AP Photo/SITE Intelligence Group)
