What claims to be the most widely read reference work in history has its benefits and drawbacks. Today's show explores them and explains why some teachers and news editors won't accept it as a source. We're reporting on a pair of headlines concerning Central and South America, and we're covering Indian government attempts to address highly polluted air in New Delhi. Plus: Engineers in South Korea say they've reinvented the wheel, and a man in Minnesota works on reinventing the dog waste cleanup process.

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