RIO DE JANEIRO, BRAZIL - It all began when Luis Díaz retired from public service, a 63-year-old former boxer who also works as a blacksmith. Money was not enough to cover his household needs at the time. He joined three friends to start planting corn and pumpkin.
Helped by his large frame, this farmer with 3 children and 6 grandchildren tills the land on a mountain from where he can see a good part of Caracas. Dressed in a long-sleeved shirt and with an old machete hanging from his waist, he climbs at least three times a . . .