It looks like it is only in Quebec, but what a good idea:

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It takes 10 times as much grain to feed a person with an cow doing the initial digestion on the vegetable matter as not. Given how many of our compatriots are using agricultural lands to power their driving habits via ethanol, now is a particularly useful time to cut way back on meat eating. Particularly if you also want to live in a world without food riots.

I understand that not every person can make this change, but most of us don't have an excuse.