. >> it's daybreak, and hektor mecarillo is on his way to milk s cows.s aath up t nambugua, a unin in th la sultura biosphere reserve southern xico. gend has ithat anyonwho trieto take something away from the mountain will never returnome. e slopesre shroud in an almo primamist. the'sng away en widesead defostationnever returnome. onany of t other mntain e slslopesn the reon.an farmerkeep the cattle the fosts thatemain. hekt carillo cows gre on la that's nced o to protect the woodland. >> the cattle wreak havoc in e forest. ey destroy everhing, contaminate the stams and cae groundnd. erosion. so if they run around the forest and it rains, there'll be landslides. >>ector keeps 20 cows. he used to have many more but he got rid of half of them because he knows that traditnal livestock farming is bad for the environment. decades ago, his grandfather switched from growing corn and beans to livestock farming, because it was more profitable. three years ago, hector joined the project biopasos, which promotesattle farmg that's sustainabld doest destroy three ydi