How close are we to a hamburger grown in a lab?

Photos: Fearing the future?
Fearing the future? – Americans are wary of many sci-fi developments in science and technology, according to a recent Pew survey. Read on to see U.S. adults' opinions about drones, robot nurses, lab-engineered meat and other futuristic advancements.
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Photos: Fearing the future?
Fearing the future? –
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Photos: Fearing the future?
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Photos: Fearing the future?
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