"Multiple studies published in peer-reviewed scientific journals show that 97 percent or more of actively publishing climate scientists agree: Climate-warming trends over the past century are very likely due to human activities. In addition, most of the leading scientific organizations worldwide have issued public statements endorsing this position."

Harper is one of the 2-3 percent who don't necessarily disagree that the Earth is warming, but are skeptical human activity is the leading cause of the change in climate. In fact, Harper has said in the past that the warming of the planet is actually a good thing, claiming that crops like wheat, rice, soybeans and cotton are handicapped because there too little carbon dioxide in the atmosphere.

"A dispassionate analysis of the science indicates that more carbon dioxide will bring benefits, not harm to the world," Happer said during his testimony to the Senate in 2015.

During the segment, Happer once again attempted to make the case that the Earth is actually getting greener due to higher levels of carbon dioxide entering the atmosphere.

"There's this myth that's developed around carbon dioxide that it's a pollutant. But you and I both exhale carbon dioxide with every breath," Happer said. "It's something that plants love. They grow better with more carbon dioxide, and you can see the greening of the Earth already from the additional carbon dioxide in the atmosphere."

Multiple peer-reviewed studies complied over the past few years confirm that climate models are accurately predicting ocean and global warming. One study notes that since 1992, models have been within 3 percent of the actual measurements.

"How is that an appropriate comparison?" a visibly confounded Blackwell asked.

Watch the full segment: