Fossil fuels will last for eternity. They are being produced all the time.
Let's start there. Explain.
Why? Either take my word or look it up.
But if you want an explanation, volcanos, trees, and most lifeforms produce carbon. Now as the amount of CO2 in the atmoshere is 0.02%, the carbon is being absorbed by the earth. After millions of years, coal is formed through vulcanisation and rotting vegetation. Sure, they have said tat it takes 70 million years to form coal, but as the earth was vegetated at least 400,000,000 years ago, and the amount of volcaninc activity that took place in that time, there would have been coal produced on a regular basis. We as a planet could not have used up 70,000,000 years worth of resources in 200 years, even accounting for the oil reserves and coal reserves that we've used. Think it's bullshit? That's up to you. Don't care. Me? I'm hardly going to listen to a bunch of wankers sitting around singing Kumbaya and hoping that the world can be saved with some cosmetic changes. I say we as humanity have a good 30,000 years before we need to worry about anything. That is unless some idiot decides to start another stupid war, like Afghanistan.....