You Have a Choice Two trains are traveling side by side and at the same speed along parallel tracks. We are seated in one of the trains, and with us we have a special speedometer that measures their r...
Animals at Risk: Who Cares? An animal species becomes extinct when it fails to produce enough young is each generation to keep pace with the death-rate. We can tell from fossil evidence in rocks that...
The Killer Smogs On the night of December 1, 1930, a dense fog moved over the Meuse Valley, in Belgium. Many factories in the valley poured smoke and fumes into the foggy air. This created a dark smog...
You Can't Do It Because It Hurts Nobody Who do you think breaks the law in our society? If you believe that only tough guys commit crimes, you may have to think again. Answer the following questions h...
Marriage in Iran and America: A Study in Contrasts Though marriage is practiced in almost all countries of the world, the customs are quite different from one culture to another. It is interesting for...
The Language of Uncertainty Uncertainty spreads through our lives so thoroughly that it dominates our language. Our everyday speech is made up in large part of words like probably, many, soon, great,...
It Never Rains but It Pours! An hour before midnight is worth two after or so my mother used to tell me as I sat down to breakfast after a particularly late night. But is it really true that sleep bef...
Current Attitudes toward Physical Fitness Recently we were told by a student that setting aside time for improving his physical fitness would be a total misuse of his working hours. He assured us that...
People and Colors One person chooses a bright red car, but another prefers a dark green. One family paints the living room a sunny yellow, but another family uses pure white. One child wants a bright...
Non-verbal Communication If anyone asked you what were the main means of communication between people, what would you say? That isn't catch question. The answer is simple and obvious. It would almost...