Speaking in New York City, former Vice President Al Gore called for civil disobedience and state attorneys general investigations against coal companies.

"If you're a young person looking at the future of this planet and looking at what is being done right now, and not done, I believe we have reached the stage where it is time for civil disobedience to prevent the construction of new coal plants that do not have carbon capture and sequestration," Gore told the Clinton Global Initiative gathering to loud applause.

"I believe for a carbon company to spend money convincing the stock-buying public that the risk from the global climate crisis is not that great represents a form of stock fraud because they are misrepresenting a material fact," he said. "I hope these state attorney generals around the country will take some action on that."