If we continue the path that we're on Senator Murkowski and her oil-loving cronies are going to take us all off the cliff, you and me both. 

But I agree a lower population is needed to reduce environmental impacts but until our planet's growing population can be stabilized we need to reduce emissions.

Also, there is no right temperature. There is, however, a right trajectory. Earth warms and cools due to several factors such as earth's orbit, tilt, and wobble, all of which occur on set rotations amd have been mapped, traced to past environmental changes (like iceages), and predicted for the future. The trajectories have followed the same patterns across earth's 4.5 billion year history and just now, in the past 200 years, they have swayed from that trajectory and are warming at alarming rates when we actually should be in a period of cooling. 

Yes, we have had ice ages and warm weather in the past but it was on a set, repeating cycle. I encourage you to research these cycles more.