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How to Build Nanotech Motors

Catalytic engines enable tiny swimmers to harness fuel from their environment and overcome the weird physics of the microscopic world

By Thomas E. Mallouk and Ayusman Sen

How to Grow New Organs

Pioneers in building living tissue report important advances over the past decade

By Ali Khademhosseini, Joseph P. Vacanti and Robert Langer

What Makes Us Human?

Comparisons of the genomes of humans and chimpanzees are revealing those rare stretches of DNA that are ours alone

By Katherine S. Pollard


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