Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Rains Bring Relief as Water Again Flows Through Zimbabwe's Victoria Falls Columbus Mavhunga VICTORIA FALLS, ZIMBABWE - After a long and unsettling dry spell, the water at Zimbabwe's Victoria Falls is flowing again, fed by rains upstream in Angola and Namibia. But experts say global warming is having a huge impact across Africa, and the continent needs to take immediate action to help reverse the trend. Nkosilathi Nyathi, a 17-year-old environmental activist from the resort town of Victoria Falls, says he will not rest until world leaders unite to reduce air pollution and greenhouse gases that are causing global warming. "It's now time to act," he said. "Use renewable energy and mitigate against climate change. Fifty years from now, what will be my environment if I do not mitigate today? It's now time to act. To the world leaders I say: It's now time to act. Include the youths in your policymaking because those are the people on the ground, the people who are feeling effects of climate change." .