> But why can't we act on multiple fronts?
Yes, as long as we don't forget where the big problem really lies and we also act there.
I've met quite a number of vegetarians that believe that not eating meat is the solution to all problems. Of course they fly to Thailand for their yoga retreat, buy food at supermarkets, buy products that have been transported all over the world, and a very long etcetera. It's easy to ride on the moral high ground of vegetarianism blindly ignoring every other facet of our modern lifestyle. From a seemingly benign Google search, to watching a movie at the theatre.
I don't like to touch this subject but another big and controversial issue is having kids. Every kid we put on this planet will produce a number of tons of CO2. About 7 on average, about 20 for a US kid.
http://www.wri.org/sites/default/files/uploads/per_capita_em...
So can we act on multiple fronts?
Can we remove a glass of water from a sinking ship at the same that we pour buckets of water in it?
You tell me.