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Unformatted text preview: ma cases double and then double again. Now a third of the world fears breathing. As the oceans dump
carbon dioxide, the greenhouse effect increases, which further warms the oceans, causing them to dump even more
carbon. Because of the heat, plants die and burn in enormous fires which release more carbon dioxide, and the
oceans evaporate, adding more water vapor to the greenhouse . Soon, we are in what is termed a runaway greenhouse
effect, as happened to Venus eons ago. The last two surviving scientists inevitably argue, one telling the other, “See! I told you the
missing sink was in the ocean!” Earth, as we know it, dies. After this Venusian excursion in temperatures, the oxygen disappears into the
soil, the oceans evaporate and are lost and the dead Earth loses its ozone layer completely. Earth is too far from the Sun for it to be the second
Venus for long. Its atmosphere is slowly lost—as is its water—because of ultraviolet bombardment breaking up all the molecules apart from
carbon dioxide. As the atmosphere becomes thin, the Earth becomes colder. For a short while temperatures are nearly normal, but the ultraviolet
sears any life that tries to make a comeback. The carbon dioxide thins out to form a thin ve...
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