Canadian Press: The former U.N. climate chief who has advocated putting a price on carbon emissions says water also should carry an appropriate cost. In a world of shrinking fresh water supplies, nations, companies and individuals should be aware of the value of water, Yvo de Boer told a water seminar Thursday. Accounting for the entire supply chain, it takes 75 litres (20 gallons) to make a glass of beer; 2,700 litres (713 gallons) to manufacture a T-shirt; and 16,000 litres to produce a …