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Great Wall of China Longer Than Previously Reported
iStockphoto/Thinkstock(BEIJING) -- The Great Wall of China is already the longest man-made structure in the world but we may ...
The Garbage Cruise -- Tracking a Sea of Floating Tsunami Debris
Sankei via Getty Images(TOKYO) -- They were not signing on for a pleasure cruise when Marcus Eriksen and 11 others climbed ab...