Giant ocean liners moored in downtown ports are a startling sight in many European cities. But they are also a source of pollution because they have to leave their engines running to get electricity. Until now.
Diesel generators are often dirty devices. But what if you could turn the soot they puff out into something useful? A young group of engineers in Delhi did just that. And ships are next.
While diesel cars increasingly look to be on the way out, another big polluter is often ignored: shipping. Will electric vessels, including the first e-barges, help the industry clean up its act?
Puerto Rico is still picking up the pieces after Hurricane Maria. Solar power has helped some get back on their feet, but as hurricane season comes round again many fear their island just isn't prepared.
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