I am not sure how old I was when it dawned on me (or someone told me) that Christmas and the New Year did not come at exactly the same time everywhere in the world. I am not sure how I felt when I learned the kids in Europe had opened their presents six hours before I did. And for sure, I do not think I could quite grasp the fact that Chinese kids had done their New Year’s party at noon my time. And by the time I watch an old year go out and welcomed a new one, the Chinese had just had their lunch! Now I know fully that all this is due to the fact that our earth is round. It is a big ball. And it takes the ball twenty-four hours to spin around one time. I know this in my head, but honestly I have had very few experiences to convince me the earth is round! It still looks flat, except when you get in the mo...