Historical emissions of gases like CO2 have a long-lasting impact on our planet's temperature, even if we stop emitting them. Scientists studied the effects of short-lived gases, like methane, on our climate and found that their warming effects can mostly reverse quickly once emissions stop. Despite this, the oceans keep getting warmer for centuries, even if we cut these emissions. Stopping fossil fuel emissions can prevent a lot of future temperature rise without stopping all activities, like farming, completely. This research helps us understand how different gases affect our climate and can guide efforts to limit global warming.