3 ms·
Point source pollution, and also I am guessing, about 85% of dense urban daytime noise where average speeds are below 20mph. HVAC and tire noise make up a consi
by hadlock 7y ago
Point source pollution, and also I am guessing, about 85% of dense urban daytime noise where average speeds are below 20mph. HVAC and tire noise make up a considerable portion of the remainder. Big cities are about to get a lot quieter over the next 20 years.