Around the world, millions are celebrating Charles Darwin's 200th birthday.
Radio Lab brings you the highlights:
New Haven: Yale's Peabody Museum is having birthday cake (and a letter from Darwin to once-Yale professor O.C. Marsh).
If you can't make it this afternoon, the Yale Center for British Art's new exhibition, Endless Forms: Charles Darwin Natural Science and the Visual Arts, is in New Haven through May 3.
Cambridge: Harvard University's dining halls will be serving cake tonight, a non-stop read-a-thon of Origin of Species continues until 7pm (and History of Science Professor Janet Brown will deliver a public lecture on Darwin at 200).
The Twin Cities: The Bell Museum has a Darwin Day opening event tonight with top university biologists.
On the West Coast: the San Francisco Botanical Garden will be holding a watercolor exhibition and birthday party tonight, the Exploratorium will be hosting a conversation with Dr. Thomas Lewis: Explore Amour: Tracing the Origins of Love and the University of Washington's Burke museum celebrates this evening with a Birthday Bash.
But that's not all! Find a Darwin Day event near you, from Calgary to Melbourne.