fossil gas, "natural gas," is just dead decomposed dinosaur molecules that release energy in combustion, which is super nasty for the environment.
fossil gas is extracted and stored and eventually transported and distributed so you can heat your soup. This is massive waste of energy but very profitable for the companies.
a method of fossil gas extraction is fracking. This energy intensive and massively destructive method pumps toxic methane directly into the air through the venting process. Fossil gas is marketed as "clean natural gas" but the main component of fossil gas is methane, which is a superpotent greenhouse gas.