The end of the first episode shows the melting of Greenland's glaciers, which is both shocking and distressing. Water is the source of all things, and glaciers are the largest reservoir of freshwater resources. Melting glaciers not only means the loss of freshwater: it will also cause sea levels to rise, flood low-lying areas, and change ocean currents and marine ecology;
Glaciers are melting twice as fast as they were ten years ago, and I can't imagine what the future holds. At present, the living space of polar bears is getting smaller and smaller, and the melting of glaciers leads to shorter and shorter hunting time.
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