(WLUK) -- If there was one upside to the widespread, stubborn areas of fog earlier this week, it was that it resulted in lots of photos like the ones you'll find in this story's photo gallery.

There are plenty of things to worry about when it comes time to winterize your vehicle. But is freezing gasoline one of them?

Look closely at an ice cube, and you might spot minuscule bubbles shaped like teardrops, flattened eggs or even winding worms. Bubble patterns in Russia’s Lake Baikal (shown here) are even more vivid.