Zambian teen spreads the word about climate change in sign language

Bridget Chanda developed gangrene and had her lower legs amputated at age seven. She now attends a special school where many of the students are deaf or hard of hearing. To communicate with them, she taught herself sign language, and now has become an interpreter for her classmates. (AP video by: Sababatso Mosamo) (Production by: Sababatso Mosamo, Kathy Young)