I was perusing a BBC news page there, as is my want, about the dangers of shale gas, that it might introduce dangerous chemicals into drinking water, when I came across this paragraph.
Why are the advantages of shale gas?It boosts overall worldwide gas supplies and can help to reduce market cost. Shale is not anticipated to supply a large proportion of Britain's gas needs, but it is contributing to a worldwide flow of gas that has halved gas prices in the US domestic market, and led to a glut in world markets. It's estimated to have offered gas security to the US and Canada for about 100 years, and has presented an opportunity to generate electricity at half the CO2 emissions of coal. Exploration companies are also claiming there is a potential £70bn of reserves in rocks deep under south Wales.
