The intensity and color of the Northern Lights depend on solar activity and the type of gas particles they collide with. For example, oxygen produces green and red hues, while nitrogen results in ...

On the streets of Pakistan's second biggest city, smog stings eyes and burns throats. Inside homes, few people can afford air ...

The Companion Fare benefit and bag-fee waivers can save you hundreds — if Alaska Airlines is (or can be) your go-to airline. For some, that won't be possible. If you fly Alaska Airlines with ...

Although the holiday travel rush is around the corner, Atlanta-based Delta Air Lines is already focused on next summers ...

Construction work has been ongoing for nearly a year at Seattle-Tacoma International Airport (SEA). While travelers have been ...