Laborers for Brazilian construction company Odebrecht work on a construction site in Luanda, Angola, in January 2010. Odebrecht is among the major Brazilian companies that are expanding the South American country's economic influence around the world.
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A National Science Foundation artist's drawing shows the inner four planets orbiting Gliese 581, a red dwarf star just 20 light-years from Earth. The newly discovered planet, in the foreground, has a 37-day orbit and, like Earth, is distant enough from the star for liquid water to exist.
Veteran director Arthur Penn (pictured at the Berlin Film Festival in 2007) died Sept. 28. He was the guiding hand on classic movies including The Miracle Worker and Bonnie and Clyde.
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