Add us to yourGoogle favoritesNot only are bat droppings excellent fertilizers, but they also serve as a reliable record of climate changes. Analyzing 1,200-year-old bat guano samples has enabled researchers to understand some of the most significant climatic shifts in Europe during that time. The term “guano” refers to the excrement of seabirds and bats. But did you know that these droppings can also help us travel back in time, in lieu of extracting ice or ocean cores? These important findings help researchers better understand past climate changes and prepare for future ones.