Travel over five hundred feet underground with Chief Engineer Eileen Schnock. The tunnel she's working on must be able to deliver over a billion gallons of water a day to one of our largest cities....
Building places to live and work in extreme environments takes architects that understand how to play by a different set of rules. Take your students to NASA's Johnson Space Center and the University...
Our national bird is back in the lower 48 states after nearly disappearing in the 60's and 70's. Robert Mesta, a biologist with the U.S. Fish and Wildlife Service, explains what it takes to recover a...
It is important to measure the size of the animal and understand how each animal?s size and unique needs relate to the area or capacity of its enclosure. Running time 1:15 minutes. Available by s...
A guitar pickup is a device that acts as a transducer (a device that receives a signal in the form of one type of energy and converts it to a signal in another form) that captures mechanical...
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