Watch as a father and son take on a severely overgrown concrete sidewalk in their neighborhood, transforming it from an impassable mess to a clean, walkable path. Using edging tools, a Stihl string ...

Watch as years of built-up grime, moss, and dirt are transformed on this home's concrete surfaces! Follow along as the ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

Three fourths of the city of Seattle has sidewalks, like this block in the Magnolia neighborhood, but a full 26 percent lack them. (Photo by SDOT Photos / CC BY-NC 2.0) This is your first of three ...

Some pristine-looking walkways have histories stretching back decades, having provided sure footing for countless soles over the years. The time stamps are right there, carved in stone, so to speak.