The Marshall Islands has an annual budget smaller than those of some American city school boards. But its leaders hope that when it comes to climate change, what the small cluster of Pacific Ocean coral atolls lacks in economic clout it can make up for in moral authority. Last year, the Marshall Islands promised to cut its emissions 40 percent in the next decade. That's 40 percent of almost nothing -- the country, according to U.N. statistics, emits 99 metric tons of carbon dioxide each year, compared to China's 6.5 million and America's 5.8 million. It has a national energy policy that makes solar a priority, and is vying to install solar panels in every household.