How much caffeine is too much? Air pollution from fossil fuels accounts for over 5 million extra deaths a year, Tangy Apple Potato Salad

This week Zorba and Karl look at research discussing how much caffeine we should be consuming, and they discuss a study that shows air pollution from fossil fuel use accounts for over 5 million extra deaths a year. Plus, they share a delicious recipe for an Tangy apple potato salad.