“Red sky at night, sailor’s delight. Red sky in morning, sailor’s warning," as the old saying goes. But what about glowing, hazy red skies at both sunrise and sunset? They could be a sign of poor air ...

Whether you are a seasoned sailor or a steadfast landlubber, you've probably heard the saying, "Red sky at night, sailor's delight; red sky in the morning, sailors take warning." It's a widespread ...