Yeah, back in the day fossil fuel emitted more sulphur, which cools the planet (temporarily), offsetting some of the warming. It also causes acid rai and other

Yeah, back in the day fossil fuel emitted more sulphur, which cools the planet (temporarily), offsetting some of the warming. It also causes acid rai and other stuff, so sulphur emissions have gone down. Back 50 years ago some scientists believe the sulphur cooling and smoke clouds would offset the greenhouse effect and lead to overall cooling, but this was always the minority view. We've since gotten way better models, and the warming has become much more obvious so it can be measured directly.