Urban beekeeping on the rise as honey bee population dwindles

Food supply affected by honey bee population

Liz Tilton is working to save the world's food supply one bee at a time. 

Tilton, an expert in beekeeping, has read the stories and can recite the research: Honey bees are dying off in droves, leaving their hives and their babies for reasons that have stumped even the most scholarly of researchers. 

It's a mystery threatening to forever alter the world's food supply.

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