The Oglala Sioux aim to reclaim their landscape and culture heritage
Paradoxically, economics has done more for nature than ecology has.
For more than two decades, special interests have persuaded Congress to mandate Americans buy ethanol whether they want to or not. As a result, 40 percent of the U.S. corn crop is now used for ethanol rather than food.
In a world where only a quarter of all arable land remains viable for agriculture, where population is predicted to increase to nine billion by 2050, and where people are concerned with food safety, new methods of agricultural production are increasingly sought-after.