It's roughly half as bad as coal nominally, as in when combusted. It's when you look at the whole system, including pipeline leaks and fracking-site leaks that

It's roughly half as bad as coal nominally, as in when combusted. It's when you look at the whole system, including pipeline leaks and fracking-site leaks that it starts getting bad. So changing infrastructure from coal to gas is approximately worthless from a climate change perspective.