Overall, more than 1,400 flights across the country were canceled Saturday, with the majority due to weather hitting the upper Midwest, according to FlightAware.

Travel expert Lee Abbamonte breaks down how Midwest storms and heavy holiday traffic are driving delays on one of the busiest travel days of the year.

Some forecasters say a complex dance involving the polar vortex could send some of Earth's most extreme cold toward the United States.

Hundreds of flights have been canceled in and around Chicago and roads are becoming treacherous as one of the busiest travel weekends of the year collides with a major storm bringing wintery conditions throughout the US Midwest Saturday.

Cold temperatures will start to make their way into the Lower 48 by Wednesday across the Northern Plains and Upper Midwest where temperatures are expected to drop 5-10 degrees below average. The cold air will start to push further south and east by Thanksgiving.

Researchers looked at the populations of 136 butterfly species for the study Getty A new study by Michigan State University found that butterflies have been decreasing rapidly in the Midwest U.S. The recent study looked at 136 species of butterflies and ...

Both United and American Airlines say they have issued travel waivers and travel notices for passengers impacted by the storm in Chicago. This will allow their passengers flexibility to change affected flights without fees or paying fare differences.