An Arkansas couple retrofitted this 1950 Ford tractor with solar panels and eight batteries. A little more than a year ago, my husband, Terry, started talking about building a solar-powered tractor.

Jack Johnson drives the solar tractor past a kalo patch at the Kokua Hawaii Foundation Learning Farm in Haleiwa. The tractor was donated to the farm through a social media fundraising campaign. At ...

A little over a year ago, my husband, Terry, started talking about building a solar tractor. Since we were planning a move to a thirty-acre farm in Arkansas, the tractor would have to actually be the ...