I've heard so many times, how human contribution of CO2 is insignificant comparing to: Sun (already debunked by NASA), then Volcanoes. And just recently, that oceans are the biggest contributor. I guess this will be debunked soon too. And even if not, how deniers can explain constant raise of CO2 ppm starting from industrial era? And how many more myths has to be debunked, before we get serious about climate change and start to act accordingly?