Description: If the prices of goods and services do not include the cost of negative externalities or the cost of harmful effects they have on the environment, people might misuse them and use them in large quantities without thinking about their ill effects on the environment.
Jet lag. Jet lag is a mismatch between your body clock and the local time wherever you are. It's caused by rapid travel across time zones. Jet lag is also compounded by the fact that long hours spent on a plane can cause you to sleep too much, or not enough, possibly at the wrong time of day relative to where you departed from.
Time zones make it so that everyone has the same pattern of sunrise in the early morning and sunset at night. We need time zones because the earth is curved, like a ball. As the sun shines on the earth, not all places get the same amount of sunlight. The sun shines on one side of the earth and makes it light out (daytime), while the other side is dark (nighttime). If time zones didn't exist, many people around the world would have very weird patterns of sunlight during the day.