AUSTIN (KXAN) - The changing of the seasons can be a time of celebration around the world, even in areas where the temperature remains close to a hundred degrees, even in the fall. The thing is... temperature doesn't mark the change of the seasons. In this First Warning Weather University lesson, chief meteorologist Nick Bannin takes a closer look at the seasons and what exactly is behind them. In this lesson you will learn about: Why the Earth doesn't stand up right. Why seasons are different depending on which hemisphere you live in. A little Latin that explains spring and fall. Other FWWU lessons for you and your family: Why does it feel hotter when its more humid out? Is there a best time of the year to play golf? How does the weather impact your allergies?