I think global warming is a real threat, but unfortunately, there are not many practical alternatives to fossil fuel. It also gets harder when you look at countries like Saudi Arabia, Nigeria, Venezuela whose economies depend solely on oil exports.
Perhaps this is why many governments are turning a blind eye to the adverse effects of the gases.
Thank you for your reply @ulqu3 :)
That's the biggest problem. Politicians don't want to take an action because there is always some country that makes more pollution.