The latest European State of the Climate report states that, last year, Europe suffered its hottest summer on record. The heat and a persistent lack of rain caused drought which, at its peak, affected much of the continent. This not only illustrates the reality of climate change, but also how precarious our supply of freshwater can be, even in western Europe where the climate is relatively moderate.By delivering frequent and accurate gravity measurements, a new space mission called MAGIC, a cooperation between ESA and NASA, will help make the important task of managing our precious water supplies more efficient.