Notebook

  1. Humans

    Messing Around with Music

    San Francisco’s Exploratorium offers an entertaining, multimedia excursion into the science of music. Visit a virtual kitchen to sample some appliance sounds. Use video of a step dancer to compose music. Discover how various cultures around the world create musical instruments out of everyday objects. Try out a sound mixer and much more. Go to: […]

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  2. Humans

    From the April 21, 1934, issue

    Archaeological explorations at Ur, creating elements of mass three, and bouncing radio waves off the moon.

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  3. DNA Day

    Celebrate DNA Day on April 30, commemorating the completion of the Human Genome Project in 2003 and the description of DNA’s structure as a double helix in 1953.