In Bangladesh, warning systems help prevent storm casualties

The world is getting stormier, and the UN blames the increase in weather-related disasters on climate change. Bangladesh has been hit especially hard, but these days, cyclones there result in very few casualties. That's thanks to a homegrown warning system. Have Bangladeshis cracked the code to preventing storm deaths, and if so, is the strategy replicable elsewhere? The World's Patrick Winn reports.