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'Flight shame' has Swedes rethinking air travel

Saddled with long dark winters at home, Swedes have for decades been frequent flyers seeking out sunnier climes, but a growing number are changing their ways because of air travel's impact on the climate.

Nanowire 'inks' enable paper-based printable electronics

By suspending tiny metal nanoparticles in liquids, Duke University scientists are brewing up conductive ink-jet printer "inks" to print inexpensive, customizable circuit patterns on just about any surface.

Ray of light could lead to next generation of superconductors

A superconductor, which can move electrical energy with no wasteful resistance, is the holy grail of cost-effective, efficient, and "green" power production. Unlike traditional conductors such as copper or silver, which waste ...

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