PITTSBURGH -- America's storied "Steel City" is on the forefront of an energy revolution, transitioning from its long reliance on fossil fuels to renewables and energy efficient homes. In June, Mayor Bill Peduto joined an alliance of over 100 cities committing to solar and wind power. The announcement came only hours after President Trump made known he was ending US involvement in the Paris agreement, a 195-nation pledge to fight climate change by dramatically reducing carbon emissions. Trump said he "represents the citizens of Pittsburgh not Paris." Mayor Peduto, the same day as Trump's speech, assured the president that the city "will follow the guides of the Paris Agreement for our people, our economy and future."