YouTube is planning to add “fact checks” to videos expressing doubt about manmade global warming, yet if manmade global warming were true, the sea level would have risen. The global warming hoaxers say the dumbest things to-try-to back-up their claim, such as that the erosion of sea shores is the sea level rising, and acting as if occasional sun-caused global warming doesn’t produce more clouds by evaporation off the ocean to cool things back down.