"The use of paper, perhaps more than any other single product, reflects the throwaway mentality that evolved during the last century. There is an enormous possibility for reducing paper use simply by replacing facial tissues, paper napkins, disposable diapers, and paper shopping bags with reusable cloth alternatives." –Lester R. Brown, Plan B 4.0: Mobilizing to Save Civilization.
Lester Brown has spent his career making shrewd projections about the food, water, and energy people need to survive, and pushing governments to respond. None of this math brings tears to his eyes except the time in 1965 he made some calculations and risked his career advising the president of the United States to save India from starving. Get the full, incredible story, featured in Bloomberg here.