Avocados are displayed for sale in a large market in Mexico City, Tuesday, Aug. 9, 2016. Avocado trees flourish at about the same altitude and climate as the pine and fir forests of Michoacan, the state that produces most of MexicoÕs avocados. That has led farmers to fight a game of cat-and-mouse with authorities, thinning the forests and planting young avocado trees under the canopy. (AP Photo/Nick Wagner) Photo: Nick Wagner, AP