It's in all the best horror movies, but fog may be scariest when traveling in it. Delaware was under a dense fog advisory Tuesday morning. The fog will move off by 11 a.m. on Monday, but it's something to watch for early in the morning or at dusk at night.

Florida's fog season typically runs from late fall through the early spring due to the combination of moisture around and cooler air temperatures.

We have the humidity over cool waters and land to thank. While it may be neat to look at, it can be dangerous while driving or boating. Land fog usually lasts until the late morning, but there is also sea fog that can hang around longer into the day.

Fog is essentially a cloud on the ground. Lake Michigan's cool water helps thick fog to form. Fog can be one of the most dangerous weather conditions. We've seen a lot of very thick fog recently. It rolls in like a slow-motion wet blanket or a thick pea ...

Scientists have long struggled to define brain fog—let alone pinpoint a cause for it. But research is starting to reveal multiple potential causes from inflammation to a leaky blood-brain barrier. Difficulty concentrating, forgetfulness, confusion, and ...

At 9:51 a.m. on Wednesday, the National Weather Service released an updated freezing fog advisory in effect until 10 a.m. for Foothills of the Northern Blue Mountains of Oregon.