The Army, The Inventor And The Surprising Uses Of A Batman Machine - NPR

NPR

The Army, The Inventor And The Surprising Uses Of A Batman Machine NPR Sometimes the true value of an invention isn't obvious until people start using it. Consider what happened to inventor Nate Ball and his powered ascender. About 15 years ago, Ball was an undergraduate at the Massachusetts Institute of Technology when ... and more »

from Health - Google News http://ift.tt/2eGl3ZI