Question

Why did sahara expand in the last 6000 years?

Answer 1

As little as 6000 yrs ago, the vast sahara desert was covered in grassland that received plenty of rainfall, but shifts in the world's weather patterns abruptly transformed the vegetated region into some of the driest land on the earth. A texas A&M University reseacher is trying to uncover the clues responsible for this enormous climate transformation and the findings could lead to better rainfall prediction worldwide.