Levi Strauss & Co recently embarked on a new global water strategy that will see the jeans giant focus reduction efforts on the most water-stressed sourcing countries in its supply chain. Michael Kobori, vice president of social and environmental sustainability, tells just-style why the move paves the way to its long-term goal of using only as much water as replenishes naturally wherever it is operating - and why extending this work beyond the factory fence is key to driving wider change?.