Smarter Every Day shows us that a helicopter can land without an engine.
Can You Land a Helicopter Without Engine Power?
Checkout these cool gadgets...
Related Posts
Born 180 Years Ago Mandeleev is Still Predicting New Elements
Scientists Accidentally Discovered Quark Fusion, Could It Be the Future of Energy?
NASA Taps Microsoft For Latest Augmented Reality Tests
James Cameron’s Deep Dive Attempt
Why Do We Dream?
