There could be lots of natural gas in parts of New Brunswick, but it's difficult to retrieve. It lies deep underground in the shale layers. Oil companies want to use a technique called fracking to bring it to the surface. But some people are worried that fracking will harm the environment. And they may be right. We went to Pennsylvania to see the effects of fracking on communities there. We visit New Brunswick where oil companies are already exploring. Is the province ready? Nova Scotia and Prince Edward Island may also have huge shale deposits.