At The Optimist Daily we are convinced that organic agriculture can feed the world in a healthy way. But on the way to that ultimate goal we may need some help from technology. Here’s an example: The U.S. Air Force is experimenting with a device that removes weeds without the use of toxic herbicides. The “wand” zaps a concentrated beam of light and heat that kills the plants’ leaves and roots.
Killing weeds with light beams, not pesticides
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