Again, I disagree with the influence that politics currently has on Science. But there is a clear measurement that CO2 levels are rising and that the type of CO2 in the atmosphere comes from burning fossil fuels. So, there is a strong correlation that has been clearly shown many times. The questions are, 1. will the CO2 cause a liner rise or a logrythmic rise in temps? 2. How quickly will this happen? 3. What will be the result of the rise? 4. what is the best way to approach rising CO2 levels?
To the 4th question, Nuclear Power is the very best answer - it allows energy abundance with the smallest possible environmental impact.