Scientists have reconstructed a millennium-long drought history for China using an innovative blend of ancient tree rings, historical documents, ice cores, and stalagmites—giving us an unprecedented window into how water availability has shifted over the past 1,000 years.

This new gridded dataset fills a critical gap in climate science. By assimilating 186 tree-ring records, 69 historical documents, and other paleoclimate proxies from across China and surrounding regions, researchers created a detailed summer drought index that's significantly more reliable than previous models. The result? A powerful tool for understanding whether today's droughts are truly unprecedented or simply part of a longer natural cycle. Read the full story →

Today's takeaway: Ancient climate clues help us understand modern droughts and prepare better for future water challenges.