Clean Energy Versus Fossil Fuels

I am writing an article about the externalities or hidden costs of coal production. My focus is on Australia, particularly in the state of NSW but I also make reference to the US. There are some facts that I would like to have researched and added to the article and I am almost certain all of those facts would be found online. There is scope to enhance or embellish the article if some extra externalities of coal mining and the production of electricity by coal fired power stations are found. I will provide the article in an email and the ...... represent the factual research that I need to add. The article is approximately two pages long. And the facts required are b/w 10 - 15.