David M. Rubenstein has pledged a second $4.5 million gift to support our giant panda conservation and research program through the end of 2020. As a result, our scientists will be able to continue all the research they do related to giant pandas and the other species that share their habitat. #WeSaveSpecies #PandaStory #InstaScience

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David M. Rubenstein has pledged a second $4.5 million gift to support our giant panda conservation and research program through the end of 2020. As a result, our scientists will be able to continue all the research they do related to giant pandas and the other species that share their habitat. #WeSaveSpecies #PandaStory #InstaScience

A photo posted by Smithsonian's National Zoo (@smithsonianzoo) on Sep 17, 2015 at 12:32pm PDT