A bicycle, masking tape, paper, pencil, and a little curiosity are all you need to find out how the gears of a bicycle work.
Make your own simple speaker from wire, magnets, and a cup.
Opera singers carry notes that seem to last forever. How do they do it?
What do snowflakes look like on Mars?
Learn how to tie the six knots most useful on a voyaging canoe.
Pier 15 (Embarcadero at Green Street)San Francisco, CA 94111(415) 528-4444
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