The “carbon footprint” is not the only stamp humans are imprinting on the globe.  An overlooked integer in the ecological footprint equation is the “water footprint” - a concept aptly outlined by a group of EU researchers at waterfootprint.org.

Aside from providing concept analysis and links to scientific publications, the site features a gallery discussing the amount of water required to produce everyday items.   For example, worldwide coffee production is connected to nearly 120 billion cubic meters of water annually.  This number is roughly 2% of global agricultural water use or slightly more than annual runoff from the mighty Rhine.   Yet another reason to quit drinking caffeine.

Link to [Waterfootprint.org]