At the global level, as climate has been changing, the amount of vegetation in arid areas has been increasing. But scientists at the University of Copenhagen, Denmark, have, following analysis of 15 years’ worth of satellite imagery of vegetation and rainfall, identified a worrying trend: vegetation in arid areas in poorer developing countries is declining. It is vegetation in arid areas of richer developing (or emerging market) and developed countries that is increasing. Arid regions comprise ...
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