The paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Choose the missing words of the phrase or sentence.

Desertification, drought, and despair - that's what global warming has in store for much of Africa. Or so we hear. Emerging evidence is painting a very different scenario, one in which rising temperatures could benefit millions of Africans in the driest parts of the continent. The Sahara desert and surrounding regions are greening due to increasing rainfall.
Sahara desert turns （） thanks to more rain.