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|©The Associated Press|
|Prime Minister Jose Socrates of Portugal gave a speech at the signing of the EU's Treaty of Lisbon on Thursday.|
|©AP Photo/Emilio Pedroso/Agencia RBS|
|American citizen Frederick Calvin Louderback, center, and wife Barbara Louize Anne, left, are arrested for allegedly sexually abusing minors at a nudist colony in Taquara, in the southern state of Rio Grande do Sul, Brazil, Tuesday, Dec 11, 2007.
|©Daniel Darrás and Télam / Agence France-Presse|
|The new Argentine president, Cristina Fernandez de Kirchner, and the old one, her husband, Nestor Kirchner, waving to the crowd after she was sworn in Monday.|
|A foreclosed house for sale is pictured in the Green Valley Ranch development in Denver, Colorado July 26, 2007.|
|Market slowdown: Thousands face losing their homes next year|
|©AP Photo/Tulsa World, Mike Simons|
|Bob Helton stands in his kitchen as he heats his home with his gas stove in Tulsa, Okla., Wednesday, Dec. 12, 2007. Helton lost power when an ice storm hit the state. Utility crews struggled to repair power lines snapped by the ice storm that had blacked out as much as a million homes and businesses across the nation's midsection.|
|©REUTERS/Harding, Imperial College London/Handout|
|Human embryonic stem-cell derived heart cells maturing at 150 days in an image released by Imperial College London on December 12, 2007.|
|©NASA/JPL/University of Arizona|
|New images from NASA's orbiting HiRise camera have revealed some of the secrets behind Mars's bizarre "spiders" (top) and "dark fans" (bottom).
The spiders are delicate tunnels under the polar ice generated by melting carbon dioxide gas, while the fans are alternating deposits of carbon dioxide "snow" (white) and dust (black) thrown out by the erupting gas, experts say.
|Frank Pringle [right] and Hawk Hogan [left] feed the Hawk recycler, which extracts oil and gas from waste like tires.|
|©Firestone et al.|
|The 'bullet holes' in this tusk are found only on the skyward side.|
|The embedded particles have a high iron-nickel content|
|Argentine soccer legend Diego Maradona shows a tattoo of Latin-American rebel Che Ghevara during a press conference in Maracaibo, March 28, 2005. Maradona wants to add an image of Venezuelan President Hugo Chavez to his well-known collection of tattoos of leftist leaders.|
|A view of The White House in Washington May 6, 2007.|
|©AP Photo/Michigan Lawsuit Abuse Watch|
|In an undated photo provided by the Michigan Lawsuit Abuse Watch, a warning on a compact tractor that reads 'Danger: Avoid Death' has been chosen as the nation's wackiest warning label by the anti-lawsuit group. The' Wacky Warning Label Contest,' now in its 11th year, is conducted by the Michigan Lawsuit Abuse Watch as part of an effort to show the effects of lawsuits on warning labels.|