1. Food and the Environment: How do our food choices affect the planet? Daniel Cohan 2013 Jewish Food Summit, Congregation Brith Shalom

2. How do our food choices impact Earth?

3. How can we measure those impacts?

4. Life Cycle Assessment US EPA

5. Projected Warming by the 2090’s IPCC, 2007A1B scenario; Relative to 1980-1999

6. Projected Impacts of Warming 6 IPCC, 2007

7. Role of Food in Climate Change Overall Greenhouse Gas Emissions By Species

8. Food and Climate CO 2 (tractors, etc.) Nitrous oxide (fertilizers, etc.) Food Transport Driving Methane (manure, livestock, etc.) Food Production Total U.S. Emissions: 60 tons/household Lesson 1: Bigger carbon footprint from food than from driving Lesson 2: What we eat matters more than how far it travels

9. U.S. Carbon Footprint of Food

10. Energy in the Food Chain: The inefficiency of meat

11. Crops for feed, or for food? Worldwide, 35% of crops for animals In U.S., most grain grown for livestock and ethanol

12. Carbon footprint of food Lentils Tomatoes Milk Beans Tofu Broccoli Yogurt Nuts Peanut Butter Rice Potatoes Eggs Tuna Chicken Turkey Salmon Pork Cheese Beef Lamb Equivalent car miles driven per 4 oz. food consumed

13. What if everyone ate like Americans? “Earths” of resources consumed World Wildlife Federation

14. Food and Water More water is used for agriculture (irrigation) than all other uses combined World water use, 2005

15. Liters per 500g Liters per pot Liters per burger or steak Liters per liter Liters per 500g Note: For foods typically derived from non-irrigated crops (e.g., coffee), most of the water footprint is natural rainwater. For more on coffee’s footprint, see here.here

16. Water footprint per ton Total water use

17. Water Footprint: “Right” choices save 700 gallons by end of lunch Compare foods in right column with left

18. Fertilizers, Pesticides, and Ecosystems

19. Growing Fertilizer Use

20. Ammonium deposition Gulf of Mexico dead zone Fertilizers, livestock are leading causes of…

21. Take-home Messages What we eat is just as important as what we drive or how we power our homes Climate, water, land, and ecosystems are all impacted by our food choices Simple choices – especially regarding meat – can sharply alter our food footprint

22. EXTRA SLIDES

23. Agriculture Direct Contribution to U.S. Greenhouse Gas Emissions Methane (CH 4 ) Nitrous Oxide (N 2 O) US EPA, Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2010.Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2010

24. Fertilizer Impacts on Aquatic Ecosystems