IMHO, the climate is indeed changing, as it has for millions of years. In the 1800s, we had the Little Ice Age, around the 1200s we had the Medieval Warm Period,, which had higher temperatures than today... and 2000 years ago, , it was even warmer.. For sure, the number of cars has increased steadily over the last 100 Years... and they create CO2. However, I remember learning in school that plants love and need CO2... and NASA has been publishing graphs for a while now, that show us that Planet Earth is getting greener... because of the CO2 emissions.
It's getting warmer, but it's not a Crisis!
PS: I am not a climate scientist