A recent Cornell University lecturer, Luc Gnacadja warns that the worldwide problem of soil erosion is contributing to poverty and hunger, threatening both food security and freedom.  Gnacadja recalled President Franklin Roosevelt’s admonition that ‘a nation that destroys its soil, destroys itself’ in his recent April lecture at Cornell.  Careless planting and other practices, he said, continue to cause severe land degradation in many parts of the world and he cautioned that in certain areas, agricultural practices are causing soil to erode almost 100 times faster than the rate at which soil can naturally regenerate.  >Read More via http://phys.org/news/2014-04-land-restoration-expert-cautions-nature.html