Ed Berry, PhD in Physics with a focus on atmospheric physics. Dr. Berry’s theoretical PhD thesis is recognized as a breakthrough in the science of rain formation and in the use of computer-based numerical models. His model of the microphysics of rain formation is summarized in cloud physics textbooks and taught in university courses: It may be hard to believe, but climate realists now come in two opposing flavors: vanilla and chocolate. The chocolates want to prove the IPCC is fundamentally wrong by using solid, simple arguments like I have summarized above. The chocolate argument is sufficient to cut off the alarmist argument at its knees. Nothing more is needed.