For centuries, farmers have placed trees among their crops to enhance soil health, raise marketable fruits or nuts, and protect row crops from damaging winds. Yet agroforestry, as the practice is known, is generally considered a rarity among mainstream farmers. New data suggests that more farmers practice agroforestry than previously appreciated. Nearly half of the world's farmlands have at least 10 percent tree cover, more than 10 million square kilometers in total, the Nairobi-based World … [Read more...]