Historically, warming leads to shrinking deserts, and cold earth eras were also the driest. Some researchers have found that the Sahara is shrinking as the Sahel spreads north (though the Sahel itself is threatened by desertification caused by bad agricultural practices).
Historically, warming leads to shrinking deserts, and cold earth eras were also the driest. Some researchers have found that the Sahara is shrinking as the Sahel spreads north (though the Sahel itself is threatened by desertification caused by bad agricultural practices).