DRI expert offers new theory on climate
A Desert Research Institute (DRI) scientist is adding to the findings that humans are affecting global climate change.
A report released last week in the weekly journal 
Proceedings of the National Academy of Sciences and co-written by DRI research professor Joseph McConnell says that human deforestation and overgrazing in South America have led to greater amounts of dust in the atmosphere.
That dust has contributed to the trapping of greenhouse gases, which has increased the temperature around Antarctica, the report says.
McConnell and a team of researchers, including others from the Desert Research Institute, examined a 394-feet-long ice core sample from Antarctica that dated from 1832 to 1991. Read full story:
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