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We meet the mountain scientists trying to fill the holes in our understanding of glaciers.
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The new towns of northern Siberia being built to feed our need for gas.
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The organism that recycles our forests, treats malnutrition, is being turned into foam.
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Shipping, trade and the environment on board one of the world's biggest ships.
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Canada defends exit from global deal to cut CO2 levels, plus the joys of urban birds.
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