They believe the “scientific consensus” is totally political, yet the science is quite clear. It is the consensus scientists that have the satellites, mass-spectrometers, bathyspheres, and research vessels and are traveling to all corners of Earth conducting research. Those who frame the issue as uncertain or debate its causes are blind to the facts. Even mentioning the natural cycles, which are measured in tens of thousands of years, when we’ve seen CO2 levels double in the last 200 years, is childishly naive. Then there are the simple observable factors, which have occurred within the last several decades: melting polar caps, retreating glaciers, increasing hurricane intensities. Heck, in the last decade it’s become possible to traverse the Northwest Passage in a fiberglass sailboat, as was done this year, solo, in a 27-footer by Matt Rutherford.