Similarly, another report shows how experts are scrambling to figure out what is causing the tropics, and dry zones next to them, to expand rapidly toward the poles. (truth-out.org)
It seems that the subtropical dry zones in continental interiors will expand towards the poles as well. (realclimate.org)
«The trick here is we're not using any trends, [not] looking at trends in dry zones,» Fasullo said. (scientificamerican.com)