Depends where you live. For most of us, right now, it means burning coal. So that means particulate emissions, NOx, SOx, and CO. For every megawatt hour we burn about half a tonne of coal.
Nuclear? What do you do with the waste, and the question is when will that waste come back to haunt us, or our descedants?
Fossil fuels are dying. They are finite. The proof is in the rising cost.
Years ago they weighed up the pros and cons of renewable fuels and the decision was made to go with fossil fuels, mainly due to availability and cost. ...or so they say. You also need to question where the world powers had their money invested.
Things have now changed, the price of crude oil is increasing exponentially. We need to act.
I believe the solution is in renewable fuels like biodiesel and ethanol. Less emissions, cleaner fuels.
A crop can be grown and processed in a matter of months, not thousands of years. They can be grown without artificial fertilisers and the effort/fuel input can be self-sustaining if it is handled correctly. We just need to be smarter about how it's grown, and where.
I agree that we shouldnt necessarily be replacing food crop for fuel crops,
...Although they are the same thing though arent they?
A compromise can be found, as to whether we eat it or burn it.