With cars came traffic, and with increased traffic came collisions. The first electric traffic light was invented and installed in Salt Lake City in 1912 by Lester Wire, a police detective who had ...

Our penny-pinching experts have found some tricks that can boost energy efficiency and lower your bill surprisingly easily.

Even thrifted vintage lamps that don't work can be upcycled and given a new life. With an easy DIY swap, turn old indoor ...

Switching from diesel to electric trains dramatically improved the air quality aboard the San Francisco Bay Area's Caltrain ...

Switching from diesel to electric trains dramatically improved the air quality aboard the San Francisco Bay Area's Caltrain commuter rail line, reducing riders' exposure to the carcinogen black carbon ...

Despite the name, most REEs are not particularly rare. They were called “rare-earth elements” because, when they were ...

In the face of growing environmental concerns and changing market demands, a sustainable office is not just a nice to have; ...

Iconic symbols of the city’s 1800s glory? Yes. Methane-producing environmental hazards? Yes. Are they here to stay? Likely.

China’s dominance of both mining and processing means these niche metals have become a cudgel to use against opponents.

We have tried and tested the Vitesy Eteria, a personal air purifier that uses a washable photocatalytic filter instead of ...

In response to punitive tariffs imposed by Washington, Beijing earlier this month added seven rare earths to its export ...