In a nutshell?
Climate has changed and the globe has warmed throughout history. Speaking for the last 150 years, the average surface temp has gotten warmer, by about 0.2 degrees C on average. In the last 17 years we have not gotten any warmer. None. We are still nowhere near the "Medieval Warm Period" of 700 years ago. My opinion is the climate changes due to a myriad of things in nature. Has man caused it to change? I think locally, sure. Look at China or even LA years ago. Overall? Maybe but very small amounts. I looked at over 90 climate models produced over the last few decades and every single one does not agree with actual observations. Every one predicts the earth warming much more than it has. So yes, I believe in climate change and we must be good stewards of this planet. Now, someone define "good stewards" lol. THAT is the question. I think the biggest disagreement is what exactly will hurt the planet. I do know that CO2 has went up and the temp stayed the same so that myth is busted. Plus the CO2 was 5X this level once upon a time.

If you really want to question what is right though here is a big quandary:
1000 years ago we went through the Medieval Warm Period coming off a long cool period. This is the first prosperous era. It was warm enough to grow lots of food. 500 or so years ago was the Little Ice Age. Things were not so good then for man. Lots of people died and food was scarce. So, for man, warmer (to a point) is better for food production and animal population. Colder is not so good for food and animals. Do you really think man is smart enough to figure this out? Looking at our leaders today I don't think so. Now, good luck finding a true temperature graph of actual real temperatures from the past. Over the last several years everyone has mutilated it. They exist but must be taken with a grain of salt and compared to others. Just because it is has a government department on the graph does not make it so. You can actually compare the history of the earth's temperature done 20 years ago to now and there is a big difference. What changed? Politics is all. History didn't change. Motivations did.