A University of Minnesota researcher hopes to convince the nation's beekeepers to adopt a new approach to fighting the diseases that are devastating the honey industry. Entomologist Marla Spivak has developed a new, commercially viable strain of disease resistant bees that she hopes will allow beekeepers to cut down on pesticides and antibiotics.. Minnesota Public Radio's Mary Losure reports. Last winter, half the commercial bee colonies in the country died---due to the combined effects of a harsh winter and parasitic mites