… how will it be spent, and can it make a difference? This is not the first time the Great Green Wall has been announced , of course. It was … with much fanfare, but the track record since then has been less than impressive. While the websites list glowing achievements across the … so well by Jeremy Swift , in 1934 colonial scientist E.P. Stebbing first claimed that the Sahara was expanding year on year. This was based …