Washington Post: Kenya’s Chalbi Desert is a bleak, forbidding stretch of coarse sand and ash-gray ridges broken by clusters of tiny huts. It is also one of the windiest places on Earth, experts say, and it soon will be the site of Africa’s largest wind farm. In January, a consortium of Dutch and Kenyan investors will begin construction on the $760 million project, which envisions more than 350 wind turbines towering over desert expanses near Lake Turkana in northern Kenya. When completed in 2012, the …