https://thelogicofscience.com/2016/06/06/global-warming-isnt-natural-and-heres-how-we-know/?fbclid=IwAR3srCmT8eb1kNvkAY366UrVKF9KTLsmWkGme_kXntbvmevMOmg3QoNePkU

“The cornerstone argument of climate change deniers is that our current warming is just a natural cycle, and this claim is usually accompanied by the statement, “the planet has warmed naturally before.” This line of reasoning is, however, seriously flawed both logically and factually. Therefore, I want to examine both the logic and the evidence to explain why this argument is faulty and why we are actually quite certain that we are the cause of our planet’s current warming.”