Marian Koshland Science Museum Grand Opening: "Discover DC's newest museum as its doors open to the public—revealing the science driving today's headlines and affecting our lives every day.

"The Grand Opening will spring into action with performances by Velocity Stilts—acrobats who have adapted the latest technology used in artificial limbs into high-performance stilts. The big-band sound of the Junkyard Saints will also entertain as museum interns from Banneker High School engage visitors in hands-on science activities.

"Museum admission will be free on opening day only—general admission rates will go into effect Saturday, April 24."