As the United States looks to reform its health care system and expand access to the uninsured, countries that have moved toward universal health care may offer lessons.

Loss of forests is a major contributor to greenhouse-gas emissions. Plans to devise a policy tool for using trees for carbon dioxide sequestration are now under way.

Global food prices are being driven up by a number of factors including bad weather, low stocks, and unstable commodities markets. Combating price volatility and protecting food security will take in…

Non-OPEC oil producers, which turn out most of the world’s oil, are operating near capacity.

A decade after 9/11, U.S. Muslims grapple with their place in American society in the face of concerns about homegrown terrorism and questions by non-Muslims over the threat they might pose.