Here’s Why You Should Be Optimistic for the Environment on Earth Day

The global warming conversation is seldom hopeful and upbeat but today, on Earth Day, UC Berkeley physics professor Richard Muller is thinking positive. Muller created the Berkeley Earth Foundation with his daughter to address issues of climate change. According to Muller, the biggest climate catastrophe in the world today is air pollution and as he discusses what we can do to help developing countries like China and India move away from carbon dioxide production, he remains optimistic about the future. "Recognize that we live in a great world and what we're really looking to do is to keep it great and make it even greater," he says.