With which two claims made by the author of "Stopping the Spread of the Sahara" would the author of "The Greening Desert:
Tracking the Effects of Climate Change" most likely disagree?
If we do not work to stop its spread, much of the continent of Africa
may soon be covered with scorching sands.
Currently, one-third of all land on Earth is arid.
According to experts, the desert is now expanding to the south at a
rate of 30 miles per year.
Recently, the Sahara's sands have swept across the once-thriving
village of Chinguetti.
And humans contribute to the problem.
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