Watch Live as Kids Test Their Inventions in Annual Challenge – Dec 11, 2009

Tune in to see middle- and high-school teams showcase their inventions — cardboard bridges capable of carrying up to 235 pounds (107 kilograms), in this year’s Invention Challenge hosted by NASA’s Jet Propulsion Laboratory in Pasadena, Calif.

The live event will air on the “NASAJPL” channel available on Ustream TV at  on Dec. 11, 2009, starting at 11:30 a.m. PST (2:30 p.m. EST and 19:30 UTC).

Twenty student teams from throughout Southern California will watch to see if their bridges remain standing as bricks get piled on. Eleven teams of JPL engineers and scientists will also compete in this friendly but challenging contest.

The bridges must meet certain requirements: they must be made of cardboard or paper products, use reasonable amounts of glue, span a 1.2 meter (48 inch) gap, and be no more than 45.7 centimeters (18 inches) wide. The bridges must carry standard-sized bricks (between one and 44) that weigh about 2.42 kilograms (5.35 pounds) each.

If you are on Facebook show your support by saying you’ll “attend” the Invention Challenge remotely at:

More information about the Invention Challenge is available at:


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