The researchers analyzed climate models to see how well they predict climate zones that affect plant life. By looking at the Köppen classification system, they found that some models fail to accurately represent key climate zones important for plants on about 20-30% of Earth's land surface. This could lead to significant errors in how these models simulate the impact of climate change on ecosystems. Identifying these errors early can help improve the accuracy of predictions about how plants and the environment may respond to future changes in climate.