Although this year’s Rio+20 conference produced only vague goals and few concrete commitments, it provided a major opportunity to shift the global environmental focus to the national and local levels…

President Obama’s first National Security Strategy departs from Bush administration doctrine by redefining the war against terror groups and embracing multilateralism, and may expect too much from gl…

Six experts weigh in on the contagion threat of the European debt crisis and the potential impact on the U.S. economy.

Prices at the pump are emerging as a significant U.S. election issue. Five experts offer a range of policy options, from lowering regulations to encouraging less consumption.