Africa's Sahel region emits considerably less greenhouse gasses than the U.S. and China, but with temperatures in the area rising 1.5 times faster than the global average, the region is still especially vulnerable to climate change. Mali’s Lake Wegnia, which provides food and water to thousands of residents, is shrinking due to rising heat and unpredictable rains. VOA Correspondent Mariama Diallo reports and Pin Sissovan narrates.