Walk around a U.S. city and you'll occasionally see these bins sitting next to mailboxes. The U.S. Postal Service uses them to haul periodicals and what they call "flats"--letters and envelopes--and occasionally leaves them next to a mailbox to be used by the next postal worker. The bins are s

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The material that makes cured-in-place pipe is blown down and into the old corrugated metal pipe under a parking lot. Workers from FerraTex in Martinsville get to see their product in action: (from left, in blue) Julio Santamaria, Blake Orr, M

Clear acrylic panels have long been a mainstay of 3D printer enclosure designs, but they can also add significant cost in terms of money, shipping, weight, and hassle. An alternative material worth looking at is corrugated plastic (also known by its trade name coroplast) which is cheap, light,

Recycled plastic piping is a key component in projects for stormwater management and more. | Courtesy of ADS

C urrently, national leaders are calling for infrastructure improvements in communities across the country. They are also pushing for more plastic to be recycled.

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Polycarbonates are a group of polymers that can be formed by heat (thermoplastic), but still contain carbonate groups in their chemical makeup. Polyca

After reopening certain stations, the Passenger Rail Agency of South Africa has prohibited trading on trains, leaving the sellers who rely on commuters out of pocket.

A regular rhythm is returning to the Mabopane-Pretoria commuter rail line after it was shut down for refurbishment in Au