[ad_1] Today’s happiness and personal-finance gurus have no shortage of advice for living a good life. Meditate daily. Sleep for eight hours a night. Don’t forget to save for retirement. They’re not wrong, but few of these experts will tell you one of the best ways to improve your life: Ditch your car. A year ago, my wife and I sold one of our cars and replaced it with an e-bike. As someone who writes about climate change, I knew that I was doing something good for the planet. I knew that passenger vehicles are responsible for much of our greenhouse-gas emissions—16 percent in the U.S., to be exact—and that the pollution spewing from gas-powered cars doesn’t just heat up the planet; it could increase the risk of premature death. I also knew that electric cars were an imperfect fix: Though they’re responsible for less carbon pollution than gas cars, even when powered by today’s dirty electric grid, their supply chain is carbon intensive, and many of the materials needed to produce their batteries are, …