Weed Zapper

As I mentioned in an recent post, European scientists are about to use huge megalasers to create a rip in spacetime.The U.S. Air Force has something a little more modest in mind.  They've just published a wish list of technologies they'd like to see developed, and one of them is a "Directed Energy Weed Abatement and Prevention Tool."Yes, the USAF is looking to kill weeds with ray guns."Develop a device that uses directed energy technology to prevent and abate unwanted plants (weeds) in...