Tucked far away from any cities, the tiny island of Niue is blissfully free of the light pollution that plagues metro areas around the world. Niue's …
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Here's Where to Find the Cleanest Air in the World
Some cities, even large ones, are making big strides in improving air quality. But what city ranks #1?
To contain the coronavirus pandemic, billions of people have been told to stay at home. In China, authorities placed almost half a billion people …
Air pollution is the result of invisible gases like ozone and carbon monoxide mixing with tiny solid or liquid particles. Together, they create the …
Africa is on its way to completing the next world wonder — a nearly 5,000-mile (8,047-kilometer) belt of greenery and conservation initiatives …