This week on Green Street, Patti and Doug talk about how painting roofs white can significantly reduce urban heat, and a new study showing that chemicals from tires are ending up in almost all of our lettuce and other parts of our food supply. Then Dr. Kyla Bennett, Science Policy Director for Public Employees for Environmental Responsibility (PEER) talks about the fate of humans in a world challenged by climate change, plastic pollution, and chemical toxins. Her conclusion: everything has to change!