A Senate review of the CIA’s post-9/11 interrogation practices has rekindled the debate over U.S. counterterrorism. Karen Greenberg, Jack Devine, and Magnus Ranstorp weigh in on the findings.

With some findings of the UN’s Intergovernmental Panel on Climate Change in question, four experts debate how much the premier climate science review panel may need to make changes.

The worst oil spill in U.S. history, still growing in the Gulf of Mexico, has intensified debate about alternative fuel options. Here, four experts discuss how to reduce U.S. oil consumption.

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.

Can the United States improve its energy security in a clean, affordable, and efficient way? Five experts offer solutions to the daunting energy challenges facing the United States.