 This research examines the global water footprints of various crops and countries, as well as the impact of international trade on water use. It found that green water is the dominant source of water used by most countries, while blue water is used primarily by countries importing or exporting certain crops. This suggests that countries should focus on reducing their reliance on imported water rather than focusing solely on domestic water conservation efforts. Additionally, the researchers found that international trade can reduce water use, but it is not enough to offset the overall increase in global water demand. This article was authored by M. Fader, D. Gerdin, M. Tammer, and others.