Setting sets the tone for a story that influences the characters and their actions. The setting itself can be a character.
Setting also can alter a story quite a bit. Just imagine how different any historical novel would be if it were to jump into the future. Or vice versa.
Next week I'll do a post telling you about the setting of my novel, Swept to Sea.
But today, I want you to give me examples of setting. What's the setting of the book you're reading right now? Or the book you're writing if you are writing one?
Also, for extra credit: how does the setting of the book you are reading affect your characters?