Voice of America: With a population of 24 million people, greater Jakarta ranks among the 10 largest cities in the world. As in other megacities of the developing world, traffic jams, messy urban planning and burgeoning squatter areas plague the Indonesian capital. One of its chief problems is the flooding that affects more than two million of its inhabitants, especially during the rainy season, and the floods are mainly a man-made phenomenon. When it rains in Jakarta, the entire city grinds to a …