5 octubre 2015
Regrowth of trees explains why grasslands in western Africa known as the Sahel have recovered after devastating droughts in the 1970s and 1980s, according to research. Previous studies have suggested that the Sahara Desert was marching southward, but the study refutes this notion, instead suggesting that it is the resilience of the Sahel, with much of the area getting greener and responding better to rainfall.
http://www.sciencedaily.com/releases/2015/10/151005184656.htm
