> fossil fuels are a renewable energy on a large enough timescale No they're not, at least coal isn't because it was formed from trees and other heavy cellulos

> fossil fuels are a renewable energy on a large enough timescale No they're not, at least coal isn't because it was formed from trees and other heavy cellulose based plant matter that wasn't broken down by microbes millions of years ago, but would be broken down today. Oil and Methane may be "renewable" but not in a timeline worth considering. Switching to other methods of generation would fix the problem of climate change caused by the release of CO2. Other issues are definitely important, but not on the same level as unchecked global warming.