3 ms·

We've known about GHG effect for over a century now. https://www.livescience.com/63334-coal-affecting-climate-century-ago.html https://www.livescience.com/6333

• avip 7y ago
  Sure. But if you spent some time in "climate debates" (which I do not recommend btw), you'd develop the habit of staying well within a safety margin of 30% for any stated fact (the US, a country of over 100mm people...)