Sustaining 7 Billion: A report on the 2011 Annual Meetingof the Agronomy, Crop Science, and Soil Science Societies.by James GieseSometime, approximately this week, the world population will reach 7 billion, according to U.N. Population Fund report. [pdf]With this milestone and the expectation that world population could double by 2100, more than 4,100 agronomists, crop scientists, and soil