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These Bricks Can Absorb Traffic Noise - Thesis Presentation on Helmholtz Resonators
(www.youtube.com)
Technology for a Solar-Punk future.
Airships and hydroponic farms...
50cc scooters are the worst, actually. Nothing like hearing the high-pitch squealing sound comparable to a leaf blower in your ear at 3am. I’d gladly see them banned from the city.