University of Iowa Researchers Identify Caffeine-Consuming Bacterium

Humans aren't the only organisms that turn to caffeine for a pick-me-up. University of Iowa scientists have identified four different bacteria that actually can live on caffeine. The research team says the discovery -- and a new understanding of how the process works -- could in the future allow scientists to convert waste from leftover coffee, tea and even chocolate into useful substances, like pharmaceuticals, animal feed or biofuels.

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