SC's worst hurricanes begin off Africa. We traveled there to find out how they're born.
Hurricane Bret formed off West Africa during a period of low Saharan dust. It's another example of how Sahara dust can smother a hurricane or allow it to grow. Will climate change affect this process? Some scientists say global warming will reduce dust, allowing tropical storms to grow. Others say climate change will generate more dust. The fates of millions on the East Coast hang in the balance.