A recent study by the Food and Agriculture Organization of the United Nations produced startling findings: The animals' burps, the nitrous oxide gases from their decomposing manure and other factors, including the energy needed to store and transport meat, were responsible for 18 percent of greenhouse gas emissions - more than the entire transportation sector.
Here are some simple things you can do to reduce your meat intake.
Step 1: You don't have to eat tofu.
Think Italian: spaghetti with red sauce, lasagna, pizza. Try vegetarian chilli instead of regular chilli. Burritos with just beans, and veggies.
Incorperating meatless meals that you already enjoy is a good start.
If you're worried about not getting enough protein with your pasta, try the protein pasta from Barilla, if comes in the yellow box. It's made with chick pea flour, and it's really good.
If you're brave you can venture onto simple substitutions. Soy milk tastes just like regular milk when you bake with it. Veggie burgers are really yummy. They don't taste like meat, they just taste good. There are all sorts of frozen meat substitutes. Some are really good, some are gross, but it's a matter of taste. Try putting soy crumbles instead of ground meat in your pasta sauce or tacos. Overcooking the soy products makes them BAD. Just warm them up.
It took me years before I started eating tofu on a regular basis. A good way to start eating it is ordering tofu meals from a chinese restaurant, they're pros at making tofu tasty. There are quite a few instructables on making your own baked tofu, which is really delicious. It has a firm texture and a lot of flavor.