Can a cleaner cookstove save lives?

Nearly half of the world’s population cooks using stoves that burn fuel like wood or charcoal, creating harmful -- even deadly -- smoke when inhaled. In Ghana, where cooking with wood is the norm, there’s a study underway to find out whether cleaner, more efficient cookstoves can reduce the toxic health effects to those most at risk: women and their babies. Hari Sreenivasan reports.