The National Zoo in Washington, D.C., is marking 50 years since the start of its giant panda conservation program. On April 16, 1972, giant pandas Ling-Ling and Hsing-Hsing arrived at the National Zoo ...
Giant pandas were back in the nation's capital Tuesday after nearly a year since the National Zoo's longtime residents headed back to China. One day after departing from Chengdu in the Sichuan ...
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