During the 19th century, Chicago’s sewage got dumped into the Chicago River and flowed into Lake Michigan. Because the city’s drinking water was, and still is, drawn from the lake via two mile-long tunnels, officials feared that the sewage would endanger the water supply.
Drones, self-propelled modular transporters and a curtain wall that really does hang off the roof like a curtain are all notable technologies that made installing an 18-million-lb timber roof possible at Portland International Airport.
Final version of an emissions regulation announced by U.S. Environmental Protection Agency will affect all on-road passenger vehicles, including cars, light-duty trucks and medium-duty vehicles.
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