Do you know the most effective ways to curb climate change? Some of the answers to this quiz from CNN might surprise you. The quiz is divided into categories such as homes & cities, food, transportation, land use, and electricity use. For each category, you get a chance to rank in order which solutions you think are most effective. And even if you find you’ve got the answers wrong (which I did quite often!), you’ll get a lot out of this quiz because each answer is accompanied by an explanation “This is similar to taking xx million cars off the road,” so you can really compare the power of each action (such as eating a plant-based diet, composting food scraps, etc.).