That's a bit dishonest as the CO2 level has risen by almost 50% from pre industrial times so you would need a very narrow definition of human activity.
It doesn't matter if the sun and the clouds have more effect. It only matters that one variable is changing, slowly but surely pushing the equilibrium.
wsc981|2 years ago
Much more impactful are the sun and clouds.
boxed|2 years ago
chefkoch|2 years ago