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Battery Vs. Battery, now in 3-D

The race to make the coolest-sounding power source

Last week, we saw the environmentally friendly battery in which a genetically engineered virus is used to produce the electrodes. To adjust the process as they went along, the scientist simply tweaked the DNA of the virus.

Elsewhere, researchers have come up with a battery that is powered by a drop of blood.

Also in today's links: a musician gets wound up over Google, golfers try to relax, and more.

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December 2009: Best of What's New

In our December issue, Popular Science names the 100 best innovations of the year: bombproof wallpaper, self-parking cars, the fastest helicopter, and 97 more. Plus inventor profiles and videos.

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