Environment

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FILE - In this March 28, 2011 file photo, new vehicles damaged by the March 11 tsunami waters sit lined in a Toyota parking lot at Sendai port, Miyagi Prefecture, northeastern Japan. A shortage of auto parts and other components after Japan's earthquake has stirred unease about two pillars of manufacturing: the country's role as a crucial link in the global supply chain and "just in time" production. (AP Photo/Wally Santana, File)

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Residents search for anything worth keeping Wednesday in the earthquake- and tsunami-devastated town of Kesennuma in northern Japan. (Associated Press)

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A man looks at the devastation, which was partially caused by fire after an earthquake and tsunami that struck Kesennuma. (Associated Press)

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'THIS NIGHTMARE': Nearly three weeks of desperation and depravation after have given some of the earthquake and tsunami survivors the courage to visit Kesennuma, Japan. Just a month ago, the town was home to 70,000 people including fishermen, teachers, mechanics and clothing makers. (Associated Press)

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Carolina Hurricanes goalie Cam Ward (30) deflects a shot by Washington Capitals' Matt Bradley (10) while Hurricanes' Bryan Allen (5) defends during a game in Washington on Tuesday. The Hurricanes won 3-2 in a shootout. The Capitals are working to improve in power-play situations. (Associated Press)

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This image provided by NASA is the first ever obtained from a spacecraft in orbit about the Solar System's innermost planet, Mercury. The image was captured early this morning, at 5:20 a.m. EDT,Tuesday March 29, 2011. The dominant rayed crater in the upper portion of the image is Debussy. The bottom portion of this image is near Mercury's south pole and includes a region of Mercury's surface not previously seen by spacecraft. On March 17, 2011 (March 18, 2011, UTC), MESSENGER became the first spacecraft to orbit the planet Mercury. (AP Photo/NASA)

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Japanese Emperor Akihito (left) and Empress Michiko speak with evacuees at a center in Tokyo on Wednesday, March 30, 2011. The royal couple visited the shelter to give encouragement to some 300 evacuees from the March 11 earthquake and tsunami, mostly from Fukushima Prefecture, where the troubled Fukushima Dai-ichi nuclear power plant is located. (AP Photo/Issei Kato, Pool)

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In this photo released by China's Xinhua news agency, heavy smoke rises over the Tajoura area, some 30 km east of Tripoli, Libya, after an airstrike on Tuesday, March 29, 2011. (Xinhua/Hamza Turkia)

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Maryland defensive back Kenny Tate (6) reaches for North Carolina State wide receiver Jarvis Williams (5) in a game at College Park last season. Tate is shifting to a safety-linebacker hybrid position for Maryland next season under new coach Randy Edsall. (Associated Press)

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The Transocean Development Driller II (top) and III are seen here in the Gulf of Mexico near the Louisiana coast in August. (Associated Press)

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A resident of Japan's Oshima island pushes a wheelbarrow past the destroyed port as he tries to salvage belongings from his home on Monday, March 28, 2011, following the March 11 earthquake and tsunami. (AP Photo/David Guttenfelder)

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FILE - This undated file image provided by NASA shows the surface of Mars as seen from the stuck Mars rover, Spirit. The prospect of ever hearing from Spirit is fading after it failed to respond to repeated calls from Earth since a little over a year ago. NASA officials say the fact that Spirit hasn't called home suggests something is more seriously wrong than just a power issue. (AP Photo/NASA, File)

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Kelley and Ed Postal negotiate with a salesman at a Nissan dealership in Ann Arbor, Mich. Much of the rise in durable goods in February came from the purchases of new cars.

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A survivor of the earthquake and tsunami in Japan cuts woods for fire for warmth at a shelter in the devastated town of Yamamoto, Miyagi Prefecture, in northeastern Japan on Monday, March 28, 2011. (AP Photo/Vincent Yu)

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The headquarters building of the Tokyo Electric Power Co., also known as Tepco, at the base of the communications tower in the middle, is pictured in Tokyo on Monday, March 28, 2011. The company, which runs the Fukushima Dai-ichi nuclear power plant at the center of the country's nuclear crisis, has issued a series of botched radiation readings from the plant in recent days. (AP Photo/Greg Baker)