Living on Earth: Global warming presents cities around the world with challenges that range from drought to storms to rising sea levels. Jeff Turrentine of OnEarth magazine tells Steve Curwood which cities are doing the most to prepare climate change, and which cities have yet to plan ahead. Transcript Dkaha, the capital of Bangladesh, is home to millions of climate refugees forced out of their homes elsewhere in the country. But the city itself lies just twelve feet above sea level, and flooding is an ever-increasing...