This metal sea urchin tumbleweed-looking thingie is actually a piece of kinetic art ... and a wind-powered minesweeper. It costs $40 to make. It was created by an Afghani guy, not a thinktank or an NGO or a government. https://vimeo.com/51887079 Grassroots technology to (unfortunately) meet the needs of victims of the technocrats who claim to be technologists. They have a flashy website. Develop and market robotic and drone de-miners... AND they have a DIY page > http://minekafon.org/diy-mine-kafon/ Too cool. Too bad technocracy make all this necessary. Rr