The Ports of Los Angeles and Long Beach, the largest container ports in the nation, are home to the first and only hybrid electric tugboat in the world, and researchers at the University of Californ…37 comments
Ozone can be good or bad -- depending on where it is. The good ozone occurs 10 to 30 miles above the earth and protects us from harmful ultraviolet rays from the sun. Bad ozone occurs at ground …38 comments
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