Science-based organization that combines science, art, and community dialogue to get people talking and thinking about environmental issues. Its main exhibit is Science on a Sphere, a giant animated globe that displays breathtaking visualizations of Earth and planetary science. Visitors can also experience programs and exhibitions in the science theater and four art galleries. Regular hours: Wednesdays and Saturdays, noon-4 p.m; Thursdays, 6-9 p.m. NNC hosts special programs: on the Sphere, frequently Thursday evenings and Saturday afternoons; gardening presentations; and hands-on art and garden projects. Visit the Urban Recycle Garden out back any time. More information: website and Facebook page.