During a hike in the Great Smoky Mountains National Park in 1995, Don Barger climbed Chilhowee Mountain hoping to gaze across the valley below. All he saw was a wall of gray haze.

Residents’ concerns about safety, noise and volume from an increasing number of helicopter flights on the Hudson River and over Hoboken and Jersey City before Thursday’s multi-fatal crash prompted ...

Contamination fuels algae blooms and wreaks havoc. Our investigation pinpointed alarming chemical levels in nearly 1 in 4 ...

Six killed in Hudson River helicopter crash; local lawmakers renew urgent calls to ban tourist flights over New York City.

While the concentration of suspended particulate matter tinier than 1.5 microns (PM2.5) is closely monitored, these toxic ...

Authorities say the industry contributes $50 million a year to the city’s tourism economy, but the number of tourist ...

Pharmaceutical pollution can significantly affect wild animal behaviour, including speeding up salmon migration.

A third of Americans still breathe unhealthy air after decades of improvements—which the Trump administration wants to roll ...

The World Travel & Tourism Council’s (WTTC) latest Economic Impact Research expects the travel and tourism industry to employ ...

Visits to the US from overseas fell 11.6 percent in March compared to the same month last year, according to preliminary ...

I spent my break on the island of Kauai, Hawaii, a place famous for being slow-moving and quiet. While this wasn’t my first ...

The rate at which the planet is warming has sped up since 2010, and now researchers say that China's efforts to clean up air ...