Credit Suisse released a report December 13 suggesting that competition between natural gas and coal may slow in the United States and other nations, but that from 2020 onward, the environmental and cost advantages of natural gas will have a global impact on coal. The report, The Shale Revolution, concludes that what works in the United States does not always work as quickly in other countries, particularly because few have the pipeline infrastructure and other market elements needed for rapid change.