Why Half a Degree of Global Warming Is a Big Deal

Each time the Earth heats up an extra half-degree, the effects aren’t uniform across the planet. Some regions, such as the Arctic, will heat up two to three times faster. The Mediterranean and Middle East regions could see a 9 percent drop in water availability at 1.5 degrees of warming and a 17 percent drop at 2 degrees, according to one major study cited in the report.

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