I recently found that IPCC Chair Dr. Pachuari is a strong advocate of eating less meat (or beef more specifically). According to his estimate, if the Americans reduce eating beef by 20%, it will have the same effect as replacing all SUVs in this country with Prius. That is a lot.
And it doesn't require any technologies! (actually, many effective solutions to tackle climate change have nothing to do with advanced technology; it's just changing the way of life.)
For those who have never linked eating meat to global warming, here is how it works:
1) To secure pasture to grow cows, forests need to be destroyed
2) It requires a lot of energy to freeze/transport meat which is currently occurring on a global scale
3) It requires long distribution/consumption path until the meat finally end up in your table or in the restaurant, and it all requires freezing.
Where there are enormous concerns on obesity and its various impacts on life in this country, cutting meat is a great solution both for your health and for earth's health. And it will save some/or dozens or more? cow's lives.
Here is the tip: once you start cutting meat, your body is less and less dependent on meat. I am not a vegan, but I don't eat beef much just because I don't feel like to or I don't feel I need to. Check out Tofu hamburger recipe to start off!