|Map of shale gas basins in Europe - The Economist|
Natural gas costs now in the US 25% of its price 5 years ago. Europe has a lot of work to do, outside the United States, shale extraction is still in its infancy.
Nevertheless it is enough for LNG (liquefied natural gas) from the North America to start arriving in European ports in reasonable quantities to create a price revolution.
|Map of shale gas basins in the US - Der Spiegel|
|Shale gas is placing the US on the road to energy independence - Der Spiegel / EIA|