Dennis Avery, Townhall: In 2016, the world’s top particle physics research facility, CERN, turned the global warming debate upside down. CERN found, in the first-ever laboratory analysis of cloud chemistry, that solar variations—not CO2 molecules—were the biggest factor in the earth’s recent warmings! To be fair, climate modelers always admitted that clouds were the biggest unsolved mystery in climate change. Two events, a solar minimum and solar sun spot minimum could mean no trend increase in earth’s thermometer readings from 1998 until after 2100! That’s a century of non-warming, and neither occurrence is connected to CO2 changes.