Just 20 years ago, the soils of the Amazon basin were thought unsuitable for large-scale agriculture, but then industrial agriculture -- and the ability to fertilize on a massive scale -- came to the Amazon. What were once the poorest soils in the world now produce crops at a rate that rivals that of global breadbaskets. Soils no longer seem to be the driver -- or the limiter -- of agricultural productivity. But a new Brown University-led study of three soybean growing regions, including Brazil, Read More