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In many cities, schools have little open space, and students may grow up without knowing where food comes from. To solve this problem, some schools are creating small gardens on their roofs or beside their buildings. Teachers use the gardens in science classes, and students take care of vegetables after school.

School gardens offer several benefits. Students can learn how plants grow by observing them every week. They may also become more interested in healthy food after eating vegetables that they have grown themselves. In addition, working together in a garden can help students make friends with classmates from different grades.

However, school gardens can also cause difficulties. Teachers and students must spend time watering plants, especially during hot weather or school vacations. Some schools may not have enough money for tools and soil. If a garden is not planned carefully, it can become an extra burden for busy teachers.

Many people throw away small electronic devices when they stop working. However, a broken lamp or radio may need only a simple repair. For this reason, repair cafes are becoming popular in some towns. At these events, local volunteers help visitors fix household items, bicycles, and toys.

Repair cafes can help both people and the environment. Visitors may save money because they do not have to buy new products. They can also learn useful skills by watching volunteers work. In addition, repairing items instead of replacing them can reduce the amount of waste sent to landfills.

On the other hand, these events need people with technical knowledge and enough tools. Some repairs take too long, and damaged devices can be unsafe to use. Organizers must make clear rules so that visitors understand which items can be repaired and who is responsible if a problem happens.

In large cities, many people work, study, or enjoy activities until late at night. After trains stop running, they often have few ways to travel home safely. Some local governments are considering night bus services that would run after midnight on busy routes.

Night buses could help workers and students return home without paying for expensive taxis. They might also reduce the number of people driving tired or walking alone at night. If more people use public transportation, cities may also have less traffic and air pollution.

However, night services can cost a great deal of money because buses may carry only a small number of passengers. Residents who live near bus stops may also complain about noise. Governments must decide whether the public benefits are large enough to justify the cost.

Some public libraries are beginning to lend more than books. In a service sometimes called a library of things, people can borrow tools, sports equipment, and kitchen machines for a short time. The idea is especially useful for items that people need only once or twice a year.

Borrowing these items can save money and prevent people from buying things that they will rarely use. It can also reduce waste because fewer products are thrown away. In addition, people can try an expensive tool before deciding whether they want to buy one for themselves.

However, libraries must check each item carefully when it is returned. Popular items may not be available when people need them, and damaged equipment can be expensive to replace. Staff members also need time to explain how to use items safely.