We can and should do better. What if we had a robot that would drive through the fields, detecting weeds and crushing or cutting them out instead of chemical s

We can and should do better. What if we had a robot that would drive through the fields, detecting weeds and crushing or cutting them out instead of chemical solutions? Couldn't we deliver the water more directly as well? Shouldn't transportation use battery powered vehicles instead of fossil fuel based vehicles? Can't we steam wash with renewable energy? Maybe it costs more to do some of these things now, but I think folks could use some good goals to work toward.