Moldy garlic is trying to warn you

That greenish-gray spot on your garlic isn't just an annoying kitchen moment, it's a warning sign. This year, erratic weather in China, source of most of the world's garlic, threw the entire growing cycle off balance, and the results are showing up in kitchens everywhere. We dig into what a single moldy clove reveals about a changing planet, and what it means for the food on all our plates. On the show: Steve, Yushan & Yushun