Handy link from NASA about scientific consensus on man made climate change for debates
This is what I post most of the time and rarely do I get a response back other than by complete fools:
And exactly what makes you an expert? The debate is over. Every scientific organization on the planet says it's man made. I don't really care what Jim from Charleston on Facebook thinks. I am going to listen to all these scientific organizations:
Snip> Multiple studies published in peer-reviewed scientific journals1 show that 97 percent or more of actively publishing climate scientists agree*: Climate-warming trends over the past century are extremely likely due to human activities. In addition, most of the leading scientific organizations worldwide have issued public statements endorsing this position. The following is a partial list of these organizations, along with links to their published statements and a selection of related resources. https://climate.nasa.gov/scientific-consensus/
You can see all the organizations at the link.