At this stage I'm starting to think that we'll need either: - a drastic societal change or, - stumble upon an ancient alien artefact progressing our technology

At this stage I'm starting to think that we'll need either: - a drastic societal change or, - stumble upon an ancient alien artefact progressing our technology to the point where coal becomes useless (digging a giant hole in my backyard with the hope of finding a Stargate whilst writing this comment) Edit: morbid humour and sarcasm aside, the sibling comments provide some context on why taxing carbon might actually work