The amount of solar energy reaching the Earth’s surface has declined significantly between the 1950s and the 1990s, apparently due to particulate air pollution. Scientists are worried that this global dimming may be disrupting the pattern of the world’s rainfall. Most alarmingly, it may have led us to greatly underestimate the greenhouse effect: with particulate pollution being brought under control, a global temperature rise of 10°C by 2100 could be on the cards, rendering many parts of the world uninhabitable
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