You may be able to do more good for the environment by changing what you eat rather than changing what you drive.Animal agriculture is the second largest contributor to greenhouse gas emissions. In fact, you may be able to do more good for the environment by changing what you eat rather than changing what you drive. And according to actress, environmentalist and mom of five Suzy Amis Cameron, you may only need to tweak one meal per day. In OMD: The Simple, Plant-Based Program to Save Your Health, Save Your Waistline, and Save the Planet, Cameron shares tips on how to reverse climate change and embrace a healthier lifestyle by swapping just one meat-based meal for a plant-based meal every day. Hear her recount the pivotal point in her own life that made her switch to a plant-based diet and how she felt an energy and immunity boost in just a matter of days. Bonus 10 Healthy Ways to Handle Excess Stress