In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.
One example: Article: There are a lot of public libraries in Britain. These libraries have more than one hundred and fifteen million books, not including those libraries of public schools. Public libraries not only lend books, music records but also help children, patients in hospitals and others to get special play readings, film shows and so on. The first public libraries were founded in about the year 1850. Today's public libraries usually have a reading-room, a lending room and a reference room. The greatest and most famous library in Britain is that of the British Library in London. It was founded in 1973 and has over 10, 000, 000 books. It has nearly every magazine, newspaper and book published in Britain and other parts across the world.
Answer: 10,000,000 or less.
Solution is here: How many books are there in the British Library?
Explanation: In the Article, 10,000,000 is mentioned for the number of books available in the British Library, so this is a good question.

Now, solve this: Article: By 2012,the world may need to cope with as many as 50 million people who have fled their homeland,not for political or economic reasons but because the environment has been so badly changed that it cannot support life. The statement has been released by the United Nations to mark UN Disaster Reduction Day. More people are made homeless by environmental disasters than by war,according to the research by the Red Cross. That reality is proved by the earthquake in Pakistan. The widely publicized disaster has brought aid from the global community,according to Janos Bogardi,director of the United Nations University Institute for Environment and Human Security. "If we can move swiftly in and give them a new start where they are,then they may stay in the area. Otherwise,they become environmental refugees. Environmentalrelated migrations are most acute in SubSaharan Africa,but they also affect millions of people in Asia and India. Meanwhile,the United States is witnessing increased pressure from victims of mismanaged and worsening soil and water conditions in Mexico and Latin America." he says. Janos Bogardi says these refugees suffer from the impact of gradual environmental change--global warming,sea level rise,air and water pollution and more intense storms,floods and droughts that degrade the land. This is a slow process,but unfortunately a process that is very difficult to go backwards once final damage is done. Janos Bogardi says they are calling on the global community to recognize the serious situation of environmental refugees and to work together to lessen the impact of environmental disaster.
Answer: Environmental refugees--an international problem
Solution:
What may be the best title of the passage?