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A. There will be a little room for each person. B. Yes, that will be a serious problem. C. He thinks students should study population problems. D. There are too many people in the shops on Sundays. E. Now many people have tried their best to do research on it. F. It's reported that China has got more people than before. G. Do you think the world's population will stop increasing? |
A: Hi, Wang Tian. Would you like to go shopping with me this Sunday?
B: Sorry, Li Xiang.
A: Yes. It's a problem.
B:
A: Oh, the population is growing faster and faster.
B: If the population is growing like this, there will be standing room only.
A:
B: Everyone in the world should care for the population problem.
A:
B: Can you give me an example?
A: Robert Wyman，a professor from Yale University. He is famous for “ Open Yale
Course: Global Problems of Population Growth (耶鲁大学开放课程:全球人口增长问题)”.
B: That's great! We should learn from him. He has done a useful thing for our world.
Do you think that living a hungry life is last century's story? Well, it may be this century's headline. The world has growing worries about a global food shortage. Right now, there are about 805 million hungry people in the world, according to a survey of the Food and Agriculture Organization of the UN. Children can't escape this either. Around 15 million children die of hunger each year. What causes food shortage? There are several reasons.
There are now more droughts and floods. This is very harmful to farmers.
Besides, with the growing population，feeding everyone is more difficult. There are a little more than 7 billion people in the world now. By 2050，the world's population will be more than 9 billion.
Another reason is food waste. A person throws away about 50kg of food every year on average. How can we help with food shortage? The easiest way is to cut down on food waste. Next time before throwing away the food on your plate, just think about how much work has been done to make it. By buying less, we waste less. This takes the pressure off producing so much food. And it helps to solve the problem of food shortage. You can also ask your schoolmates to join you.
Researchers at Kansas State University in the US put up short anti-waste slogans(标语)“Think Before You Waste" in dining rooms. Guess what happened? Students wasted fifteen percent less food after that! The author of the study said, “You don't need a huge activity to make a difference. ”
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