Last month, UN members convened at the UN Environment Assembly and passed a historic resolution to end plastic pollution. On this week's episode we're looking at what plastic is, how it can biodegrade, what biodegradable even means and what we can do to start taking plastic out of our everyday life.

Dr. Ting Xu is a professor in the Department of Science Engineering and the Department of Chemistry at the University of California at Berkeley.

Sarah Paiji Yoo is the CEO and co-founder of Blueland, a company that has committed to revolutionizing conventional cleaning and personal care products.