A chef shares: Here's how we can feed the planet without hurting the climate 

Our food choices are affecting our planet: Food production accounts for a staggering one-third of greenhouse gas emissions. To reduce this toll, we need to develop food literacy, understanding how our diets impact our health and our environments, says plant-based chef Peggy Chan. She explains how better food literacy — whether you're a food-industry professional or a consumer — is one effective way we can all help create a more sustainable and nutritious global food system.