Global drought has not increased, but climate change is still a threat - 0 views
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John Pearce on 18 Nov 12"Global drought has not increased significantly over the past 60 years, a report in Nature has found. Previous assessments of global drought have relied on the Palmer Drought Severity Index, which only accounts for temperature, and does not consider sunlight, humidity or wind. These assessments have falsely indicated that global drought will increase as the planet warms. The paper's authors show that when these additional factors are included, worldwide drought has actual changed very little since 1950."