What is air pollution? Learn how greenhouse gasses, smog, and toxic pollutants effect climate change, and human health. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world’s premium destination for... Read more »
Climate Change is a real and serious issue. In this video Bill Nye, the Science Guy, explains what causes climate change, how it affects our planet, why we need to act promptly... Read more »
