Carbon sequestration — the process of moderating global climate change by removing carbon dioxide from the atmosphere and storing it in long-term mineral, organic, and oceanic reservoirs — is an important ecosystem service provided by protected natural areas. One type of carbon sequestration...

Many aspects of the Iraq venture have turned out differently from what was purported before the war: there were no weapons of mass destruction, no clear link between Al Qaeda and Iraq, no imminent danger that would warrant a pre-emptive war. Whether Americans were greeted as liberators or not,...