In the past decade, innovations in hydraulic fracturing and horizontal drilling have fueled a boom in the production of natural gas (as well as oil) from geological formations - primarily deep shales - in which hydrocarbon production was previously unprofitable. Impacts on U.S. fossil fuel...

In the past decade, innovations in hydraulic fracturing and horizontal drilling have fueled a boom in the production of natural gas (as well as oil) from geological formations - primarily deep shales - in which hydrocarbon production was previously unprofitable. Impacts on US fossil fuel...

In the past decade, innovations in hydraulic fracturing and horizontal drilling have fueled a boom in the production of natural gas (as well as oil) from geological formations — primarily deep shales — in which hydrocarbon production was previously unprofitable. Impacts on US fossil fuel...

In the past decade, innovations in hydraulic fracturing and horizontal drilling have fueled a boom in the production of natural gas (as well as oil) from geological formations – primarily deep shales – in which hydrocarbon production was previously unprofitable. Impacts on U.S. fossil fuel...

In the past decade, innovations in hydraulic fracturing and horizontal drilling have fueled a boom in the production of natural gas (as well as oil) from geological formations – primarily deep shales – in which hydrocarbon production was previously unprofitable. Impacts on U.S. fossil fuel...

In the past decade, innovations in hydraulic fracturing and horizontal drilling have fueled a boom in the production of natural gas (as well as oil) from geological formations — primarily deep shales — in which hydrocarbon production was previously unprofitable. Impacts on US fossil fuel...