Here is a list of simple actions that work:

1. Become a vegetarian, or better yet a vegan. The share of greenhouse gas emissions from animal agriculture is usually pegged at 14.5 percent to 18 percent, but the Worldwatch Institute found lots of oversights in those calculations that, when properly counted, bring the ag contribution all the way up to 51 percent. That, you’ll notice, is more than half. Which means that after we clean up all the transportation, energy, industry and commerce in the world, we’ve done less than half the job. The other half is meat and dairy. Refuse to eat it. If this seems too challenging, consider giving it up one day a week. It will still be the most important action you can take.

2. Eat organic when you can. Organic food is good for us because we’re not putting pesticides in our bodies, but organic food is also grown without synthetic fertilizers, most of which begin as byproducts of oil refining. When you buy a conventional apple, you’re giving a little boost to Big Oil.

3. Buy local when you can. I’m not talking about patronizing mom and pop stores, although that may have its own merit; I’m talking about buying locally-manufactured products made with locally-sourced materials. This goes for food too, with home organic gardening as a local ideal. To the extent that we minimize transportation of goods, we mitigate climate change.

4. Live in the climate. The biggest residential demand on our dirty energy system is climate control—home heating and cooling. We travel from our air conditioned homes to our air conditioned workplaces in air conditioned cars. Of course, we need climate control to protect us from freezing temperatures in winter and soaring temperatures in summer, but do we need the atmosphere to be exactly 70 degrees everywhere we go, all year long? Let’s use climate control only for the extremes. When temperatures are moderate, live in the climate we evolved to inhabit.

5. Line dry your clothes. Since I stopped using a clothes dryer, not only do I feel good about the fossil fuel I’m not burning, but my clothes last much longer. Which means I don’t need to buy new clothes nearly as often. Which means new clothes are not being shipped to me from Asia in freighters burning dirty, unregulated fuel oil.

6. Vote with your feet. Every time you drive a car, you vote for the car. Every time you ride a bike, you vote for the bike. You vote economically in the fuel you purchase—or don’t—but you also vote pragmatically. These days, transportation departments keep meticulous track of road usage and transit trips. Where there are a lot of bicyclists, bicycle infrastructure is more likely to get support. Where there are a lot of pedestrians, most transportation departments will try to make streets safer and friendlier for people, not cars.

7. If you have children, don’t use them as an excuse to wage war on their environment. “I have children, therefore I must buy meat,” goes the thinking. “I have children, therefore I must drive a car.” This is like saying, “I have children, therefore I must destroy their future.” Researchers estimate each child increases a parent’s carbon footprint by nearly six times! Raise little vegetarians who know how to live in the climate and use public transit—survival skills for the 21st Century.

8. Reduce and reuse before recycle. Recycling emerged as a virtue before we knew we had a climate problem, and it turns out that transporting and processing materials for recycling is carbon intensive. Recycling still uses less energy than making new products from scratch, but reducing and reusing are even cleaner.

9. Offset your carbon emissions. After we’ve done everything above, we’ll still be responsible for some unavoidable emissions until our society cleans up its act. It only cost me $35 to offset my carbon emissions for 2016, which included some airline flights. The United Nations has made offsetting easy, cheap, and reliable, and you decide where the money goes—mine went to solar water heaters in India, inhibiting the spread of conventional water heaters there. Calculate and offset your emissions at climateneutralnow.org

By Jeff McMahon, based in Chicago. Follow Jeff McMahon