Why does it matter if the Earth warms a few degrees? A study, published in the Proceedings of the National Academy of Sciences, used artificial intelligence and machine learning to model how much the climate has warmed in the past and how much it's likely to warm in the future, given current levels of greenhouse gas releases. Even a few degrees across the entire globe means a great deal more heat in the system as a whole. Warming of 1.5 degrees Celsius would increase heat waves, lengthen warm seasons and shorten cold seasons. If temperatures were V2.0 degrees warmer, heat extremes would more often reach critical tolerance thresholds for agriculture and health, multiple analyses have found. Visit the link in bio for more information on the study.