2010, 2 min 28 sec
Never let an engineer fix your lawnmower, especially if they work for Boeing. The original plans for this design were published by RC Modeler back in the 70’s but it looks like they improved on the design.
SmarterEveryDay
2015, 5 min 32 sec
Acoustic levitation (also: Acoustophoresis) is a method for suspending matter in a medium by using acoustic radiation pressure from intense sound waves in the medium.
Nick Rosen
2010, 3 min 52 sec
Nick Rosen, author of Off the Grid: Inside the Movement, travelled all over meeting outcasts, billionaires, the foreclosed and the forgotten, trying to find out why such a disparate group were all headed for the hills at the same time. Above all he wanted to find out why they live off the grid.