Tiny Weed-Killing Robots Could Make Pesticides Obsolete

This swarm of robots may herald a chemical-free food revolution

A row of the robots lined up in front of a shed.

Clint Brauer’s farm outside of Cheney, Kansas, could be described as Old MacDonald’s Farm plus robots. Along with 5,500 square feet of vegetable-growing greenhouses, classes teaching local families to grow their food, a herd of 105 sheep, and Warren G—a…