The us environmental protection agency issues a daily report for pollution levels called the

Air Quality Index (AQI)

Explanation:

Air quality index (AQI) is a report which informs the public about the level of pollution. When AQI rises, so does public health risk.

In the United States, AQI comprises six categories that indicate increasing levels of health risk. If AQI value is below 50, it means that air quality is good. On the other hand, if value reaches 300, air quality is unhealthy.

the tallest building in the western hemisphere and the sixth tallest building in the world

“the iliad” (gr: “iliás”) is an epic poem by the ancient greek poet homer, which recounts some of the significant events of the final weeks of the trojan war and the greek siege of the city of troy (which was also known as ilion, ilios or ilium in ancient times).