As a surface for wheels, pavement does its job well enough. Asphalt concrete is flat, smooth, and solid (usually). But there is a price we pay for the convenience of paved roads and parking lots everywhere—a price paid in heat, noise, and polluted runoff. We went in search of better pavement and found these potential solutions.
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There’s way more to building a road than just slathering some asphalt all over the ground. The process is actually pretty involved, with a bunch of steps you probably hadn’t thought of. And even a little bit of art to it.
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