Sahel region is 'canary in the coalmine' on climate, says UN official||html|| ||Fundamentalismo Mali Dessertificacao Mudancas_Climaticas|2020-10-20_11:0|Skye||https://www.theguardian.com/world/2020/oct/19/sahel-region-is-canary-in-the-coalmine-on-climate-says-un-official|PDCProfs#Desertification, land degradation and drought|Orientador|html|| ||dessertificacao NU|2018-7-24_1:49|Skye||https://sustainabledevelopment.un.org/topics/desertificationlanddegradationanddrought|PhD#Desertification Effects, Causes, And Examples|Orientador|html|| ||dessertificacao|2018-7-24_1:39|Skye||http://scienceheathen.com/2015/01/05/desertification-effects-causes-examples-top-10-list/|PhD#