1. the average age of people in the countryside is increasing, while that of the city is falling. more old people stay in the countryside than young people, and the opposite is true in the cities.
2. one important reason for the move to cities has to do with quality of life issues, comfort and convenience. for example, most of us would like to have our children to receive better education, and cities often offer better education and schools.
3. most burglars are opportunities, looking for an easy breaking. so don’t make things too easy for them. don’t advertise the fact that you are out or away or be careless about security.
4. researchers from copenhagen and the university of iceland said ash particles from the early part of volcanic eruption are especially abrasive, posing a possible threat to aircraft engines.
5. lack of sanitation leads to the wide spread contamination of drinking water. recent statistics say water associated infectious diseases, claim up to 3.2 million lives each year, approximately 6% of all death globally.