Chad, in central Africa, is the world’s most polluted country, while California has the worst air pollution in North America, ...

Six out the world’s 10 most polluted cities are in India, while California has the worst air pollution in North America, a ...

All but one of the world’s top 20 most polluted cities last year were in Asia, a new study shows. The majority of these ...

Amazing stories behind the world's most historic cities where every pavement, every monument, every corner has an incredible ...

They crossed oceans to get to the U.S., fleeing conflict, religious persecution, poverty and government crackdowns in ...

Nativists say that migrants raise house prices, cost money and undermine economic growth. Do they have a point?

At 3,109m (10,200ft), it's the highest incorporated city in North America. But while the town ... "You couldn't label Leadville as the capital of the Old Wild West, especially when weighed against ...

Women going it alone and searching for adventure in the States should seek out these under-the-radar cities, says Lucy ...

A coalition of "startup nations" have met with the Trump administration in order to create areas of the U.S. free from regulation.