Recently, on a business trip to Washington, D.C., I spent a short few hours mining the riches of the Smithsonian Institution, one of my favorite places on the planet. Of all the exhibits I saw, the most impressive was at the African Art Museum (and its grounds). The exhibit, titled Earth Matters, was a collage of art, ancient to contemporary, indigenous to digital, exploring the theme of the title. The exhibit prohibited most photos, but here are some from the outside installations ( Ididn't see any prohibitions there). If you have a chance, see this wonderful, provocative and inspirational collection. At the Smithsonian until January 5.