Arable land can have a negative impact on air quality
(Helmholtz Association of German Research Centres) Fallow agricultural land and steppe-formation processes are evidently capable of having a much greater effect on global air quality than was previously assumed. This is the conclusion drawn by researchers after examining a dust cloud that formed over parched fields in southern Ukraine and led to extremely high concentrations of particulate matter in Central Europe. On March 24, 2007, the dust cloud spread across Slovakia, Poland and the Czech Republic to Germany.
The Republican presidential candidate began his final drive for the White House Thursday with a boost from running mate Sarah Palin and her nomination acceptance speech Wednesday night.
