Tumbleweed is sprawling across sidewalks. It is blowing across freeways ... weather sweeping the Western United States, in ...

Mine Kafon is just a prototype at this stage. The obvious drawbacks are that the ball blows in the direction of the wind, and so no area can be guaranteed to be cleared of mines. However ...

When you imagine an old western film, a tumbleweed or two blowing around in the background ... Their ability to break off at the base and roll with the wind helps them spread seeds over large ...