The Weed-Destroying Robots

Amanda travelled the country and the world, meeting dozens of pioneers working toward this third way approach. In arkansas she witnessed the maiden voyage of an army of weed destroying robots. The computers could distinguish between the crops and the weeds. And in a fraction of the time it takes you to blink, these computers deploy with tiny little jet a squirt of concentrated fertilizer that's too strong for a baby weed to tolerate but spare the plant itself. This intelligent weeder has the potentials to cut the use of agricultural chemicals by up to 90 % or more.