Читать книгу Climate Change For Dummies - Elizabeth May - Страница 90

Natural gas is mostly methane, which makes it a little different than the other fossil fuels (check out Chapter 2 for more about methane). The cleanest of all fossil fuels, natural gas gives off only carbon dioxide and water when it burns. Rotting trees and plant matter release methane if the conditions are wet and airless. Natural gas can usually be found around coal beds or oil fields. Recently, gas has taken over coal in many U.S. utilities because of the dirty process of fracking, (which is a term that refers to hydraulic fracturing). This kind of gas can hardly be called anymore. (We discuss fracking more in Chapter 2.)