I'm heading to the New York Botanical Gardens to moderate a World Science Festival panel on crops, biodiversity, seed banks, and the amazing life of the Soviet scientist Nikolai Vavilov. (For some background, see this New Yorker article from last year.)
If you come to the panel, stick around for the Cafe Scientifique afterwards. And check out the "Darwin's Garden" exhibit. You'll find me snooping around the cycads and ferns.