Mongabay: With more than 140 cities implementing water rationing, analysts warning of collapsing soy and coffee exports, and reservoirs and rivers running precipitously low, talk about the World Cup in some parts of Brazil has been sidelined by concerns about an epic drought affecting the country's agricultural heartland. With its rise as an agricultural superpower over the past 20 years, Brazil is today the world's largest exporter of coffee, sugar, oranges, soy, and cattle. That means the drought will take...