Shale gas changed everything.
Using hydraulic fracturing (or hydro fracturing) technology, North American gas producers over the past decade have unlocked trillions of cubic feet of new, unconventional gas reserves from shale.
Check out the chart below from a recent study by MIT (Massachusetts Institute of Technology). Both the United States and Canada have seen big jumps in gas reserves due to unconventional resources. The majority of which is shale. In the U.S., this has added nearly a trillion cubic feet (tcf) of resource. In Canada, it's added about 500 billion cubic feet (bcf). These are huge adds. (more)