3 A city spokesman said, "The bicycle program won't solve all our traffic problems, of course Also bicycle programs often have problems. The bikes are expensive, and it costs money to keep them in good condition. Unfortunately some people might try to steal them. But if we succeed, the bike program will help reduce pollution ave in the city and help with the world's problems of global warming and climate change. Some say that the bikes won't do enough. They ars it's say that fumes from factories and the loss of the rain forests are ort more serious causes of global warming. This may be true. But we have to do what we can. There aren't any simple answers to traffic problems and pollution in cities But unless we do something now, there will be more traffic jams ave and temperatures will continue sive, to rise, so the problems in our m environment will get worse