Good thought but our coal is peat from 300-350 M year ago. Much of it would have probably been "ready" 60 M years ago already. https://en.wikipedia.org/wiki/Ca

Good thought but our coal is peat from 300-350 M year ago. Much of it would have probably been "ready" 60 M years ago already. https://en.wikipedia.org/wiki/Carboniferous https://en.wikipedia.org/wiki/Carboniferous