They predicted a warming planet based on human activity as long ago as the 50s We’ve known about the mechanisms of CO2 leading to atmospheric warming since the

They predicted a warming planet based on human activity as long ago as the 50s We’ve known about the mechanisms of CO2 leading to atmospheric warming since the 19th century. We know humans are adding CO2 to the atmosphere. We observe higher CO2 and warmer temps The evidence isn’t that complicated.