Marion Nestle joins Trey Elling to discuss LET'S ASK MARION: WHAT YOU NEED TO KNOW ABOUT THE POLITICS OF FOOD, NUTRITION, AND HEALTH, including: the rising cost of whole- versus ultra-processed foods, how agriculture, Wall Street, and food regulation fueled the US obesity epidemic in the early 1980s; why glyphosate is still allowed to be sprayed on crops, whether technology can help fix our food system, and more.