Sara Rubin

Intensive grazing--in which herds are kept dense and moved frequently--can restore damaged grasslands in dry, impoverished regions, creating fertile farmland and reversing desertification. More education efforts and livestock lending programs in the developing world, and a stronger example in the U.S., could prevent future food shortages.

In Philadelphia, lawmakers are teaming up with private organizations to fill "food deserts" with fresh, healthy produce.

Health care reform will likely coordinate much of patients' care. Yet STD and contraception counseling, which seem like a natural pairing, may remain separate.