Study Links Drought Increase To Global Warming

"The percentage of the Earth's surface plagued by serious drought has more than doubled since the 1970s, and rising global temperatures appear to be a major factor, Boulder climate researchers say.

Ten to 15 percent of the planet's land surface suffered from drought in the early 1970s. By 2002, the fraction was about 30 percent, according to researchers at the National Center for Atmospheric Research. Almost half of that change is because of rising temperatures..."