Three quarters of Earth’s surface is covered in water. Most of this vast mass of water is salty, a mere two percent fit to drink. You’d think we’d conserve what’s so scarce and valuable. It isn’t always so. Bolivians are trying hard.
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Stuart Franklin is turning air miles into trees. Franklin — the founder of a carbon offsetting project in Ecuador — calculates how many seedlings he needs to plant to capture the carbon dioxide emitted by tourists jetting to the Galapagos Islands each year.