Nation

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Family members and communities around the world mourned the loss of the Space Shuttle Columbia's crew of seven on Monday as the investigation into what caused the spacecraft to disintegrate and fall to earth continued.

The world's largest media company posts an annual loss of $99 billion -- the largest corporate drop in U.S. history. Paul Solman of WGBH Boston looks at how the Internet and media giant has incurred the largest loss of any…