As you start to travel the world, you'll realize one crucial universal detail: people are messy. Many iconic cities are much dirtier and more unappealing than you may realize. For example, a trip ...

Data from more than 40,000 air quality monitoring stations in 138 countries, territories and regions were analyzed for the ...

The countries with the worst air quality included Bangladesh and India, according to an annual report from IQAir.

Paid and presented by Nanyang Technological University. Thinking more responsibly about what we consume and how we dispose of it raises questions about what is actually recyclable. A university in ...

While we typically tend to focus on the places that are the least healthy, here's a list of the most healthy. Countries are ranked according to their number of clean cities, using data from the WHO.

was the most polluted city overall. However, the report found Mayaguez in the U.S. Commonwealth of Puerto Rico had the cleanest air of any metro area around the world with a PM2.5 level of just 1. ...

For the seventh consecutive year, Indore in Madhya Pradesh has been named India’s cleanest city in the central government’s annual cleanliness survey. Credit: X/@TheIndoreRocks Navi Mumbai is ...