FOR IMMEDIATE RELEASE: Wednesday, April 8, 2015 Contacts: Bloomberg Philanthropies, Meghan Womack, meghan@bloomberg.org, 212-205-0176 Sierra Club, Maggie Kao, maggie.kao@sierraclub.org, 202-675-2384 Bloomberg Philanthropies Boosts Investment in Sierra Club to Retire U.S. Coal Fleet & Transition the Nation Towards Clean Energy Sources Efforts aim to improve public health, slash carbon emissions and allow U.S. to take action as leader in fighting climate…