Chef Ralph Brown’s parents fed the neighborhood for years. Now, he’s keeping that tradition going. Plus: Fifty years after the last atmospheric nuclear tests on American soil, radioactive elements remain in our food supply. Jim Kaste says the honey is especially hot. And: There are many threats to our food supply. Mike Evans is working with farmers to grow vertically indoors.

Later in the show: Kashef Majid says that food insecurity is a problem we can solve, simply by reducing food waste. Plus: What if you could have fresh fish without a single fish leaving the ocean? Well hold on to your forks. Reza Ovissipour and his colleagues are working to cultivate meat in their Hampton, Virginia laboratory.