It's fall, ya'll! Sweater weather is upon us. The beginning of the autumn season marks the end of warm summer days and the start of longer chilly nights. As the Earth travels around the sun, it does ...

Chillier weather, shorter days, hot mugs of apple cider and Halloween decorations aren't the only signs the seasons are changing. It's officially the first day of fall, based on astronomical data.

Are you ready for fall? The official arrival of fall is the autumnal equinox, which occurs in the Northern Hemisphere on Monday. After a hot summer, the September equinox marks a welcome shift in the ...

Fall is here, at least on the calendar, even though the weather still feels like summer in a lot of places. The autumn equinox is what scientists point to as the true start of the fall season. This ...