The Reasons for Seasons (New & Updated Edition)By: Gail Gibbons Cold winters, hot summers year after year the seasons repeat themselves. But what causes them? Why is there winter in the Southern Hemisphere at the same time there is summer in the Northern Hemisphere? In summertime, why is it still light out in the evening? With simple language appropriate for young readers, non fiction master Gail Gibbons introduces young readers to the four seasons and explains why they change throughout the year.