Causes news.sky.com Feed the family or save the planet? The fracking choice for Pennsylvania's voters The crucial state has benefited financially from fracking, but there are fears over the impact on people's health.
Solutions stateimpact.npr.org Democrats could field an anti-fracking candidate in 2020. Can they win in Pennsylvania? Some political observers think an anti-fracking message could hurt a candidate in Pennsylvania, where 30,000 people work in oil and gas.