Sunspot numbers do not directly cause global temperatures, according to a study analyzing data from 1880 to 2013. While traditional tests did not show a clear link, a new method called SSA-based causality test revealed a significant relationship between sunspot numbers and global temperatures in certain time periods. This new approach was more accurate in detecting causality compared to standard tests. The study suggests that the frequency domain causality test is crucial for understanding predictability at different time intervals, especially when structural breaks are present in the data. Overall, the findings highlight the importance of using advanced methods to uncover complex relationships between sunspot activity and global temperatures.