- Redesigned Window Stops Sound But Not Air, Say Materials Scientists
By exploiting some exotic acoustic techniques, researchers have built a window that allows the passage of air but not sound
- Once a Joke, Battery-Powered Airplanes Are Nearing Reality
Aerospace companies are working on hybrid electric airplanes, and the earliest versions will likely arrive before the end of the decade.
Last month Siemens and EADS demonstrated a new gas-electric vehicle capable of carrying two people and their luggage 900 kilometers—roughly the distance from New York to Detroit—between refuels and recharges. The prototype was not a car, but a small two-seater airplane.
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