there#s a lot of alternatives. i, for example, only eat meat if i know where it came from (well, honestly: 90% of the time. sometimes i can't help myself, which i'm not proud of, but i want to be honest here). i buy it from local farmers, which i could visit anytime and/or have it sent to me by a good friend who is a bio-bauer himself (
www.vetterhof.at).
almost the same goes for vegetables: i won't buy spanish tomatoes in december, i eat seasonal, local products (again, 90% of the time, i'm not perfect and don't claim to be, but i make an effort).
food is an enviromental issue at least as big as oil, but it doesn't get half of the attention, unless there's horsemeat labeled as beef or spanish cucumbers coated in EHEC...
EDIT: also: the heap of 700 dead piglets on the side of the road doesn't look like a small number to me. and i do see a connection with food, because they were destined to be food. just publish the pic with the caption: this is why you can buy pig meat for x.xx/$/etc per kilo.