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

By Charlotte Hawks, CNN

Updated 1923 GMT (0323 HKT) March 8, 2018

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Americans are wary of many sci-fi developments in science and technology, according to a<a href="http://www.cnn.com/2014/04/17/tech/innovation/future-technology-pew/index.html" target="_blank"> recent Pew survey</a>. Read on to see U.S. adults' opinions about drones, robot nurses, lab-engineered meat and other futuristic advancements.

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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