SYSK Choice: How DNA Predicts Our Psychological Traits & Why People’s Sense of Direction Varies

It’s become trendy to fill your car tires with nitrogen instead of plain old compressed air. In fact, there are now green caps for the valve stems to indicate that a tire has nitrogen in it. It can cost over $10 to fill up a tire with nitrogen so this episode begins with a quick discussion on whether it not it is worth it.