<p>From the cotton field in rural India to the local rag bin, a typical pair of blue jeans consumes 919 gallons of water during its life cycle, Levi Strauss &amp; Company says, or enough to fill about 15 spa-size bathtubs. That includes the water that goes into irrigating the cotton crop, stitching the jeans together and washing them scores of times at home.</p><p>The company wants to reduce that number any way it can, and not just to project environmental responsibility. It fears that water shortages caused by climate change may jeopardize the company’s very existence in the coming decades by making cotton too expensive or scarce. <a href="http://www.nytimes.com/2011/11/02/science/earth/levi-strauss-tries-to-minimize-water-use.html?ref=water" title="Levi Strauss Tries to Minimize Water Use">More</a> (Source:The New York Times)</p>