Global warming is causing the Sahara desert to grow, new research suggests. Scientists have found that the world's largest desert has expanded by more than ten per cent over the last 100 years. The southern edge of the Sahara borders the Sahel region, the semi-arid transition zone that lies south of the Sahara. The Sahara expands as the Sahel retreats, disrupting the region's fragile grassland ecosystems and human societiesThese maps show the changes in the Sahara Desert from 1920. The southern edge of the Sahara borders the Sahel region, the semi-arid transition zone that lies south of the Sahara.

Source: Daily Mail March 29, 2018 18:02 UTC