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The zoo is open! All visitors will require free entry passes and be required to follow safety measures. Free timed-entry Asia Trail/Panda Passes are required for the giant panda viewing.

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Earth Optimism: Oryx

Extinct in the wild for more than 35 years, scimitar-horned oryx are back in their native habitat thanks to international collaboration and the power of science. On Earth Day weekend, the Smithsonian is convening the Smithsonian Earth Optimism Summit, an event about the science that's working to solve complex conservation challenges around the globe.