Why choose? Stop wasting food, since 30% of the food produced is wasted. Wasted food rots causing more global warming. Nothing to do with animals, we don't need to all go veggie, just stop the waste.
I have already said stop producing so many goods that we just don't need. So much energy is wasted. What I would like to happen never will happen because those in power don't care enough to do it. Or they care too much about wealth to do it. I would love to see all unnecessary flights stop. I would gladly forego my holidays if everyone else did too. Stop expecting a growth in the economy. Go for decline and less production, less wasting of the earth's resources. Make do and mend. Stop throwing things out because we want new. Painful, hard, but do we want to save the planet or not? If it's that important to halt global warming (and it is) then stop wasting fuel (whether fossil fuels or not) on unnecessary things. Yes renewable energy is a good way to go, but what we really need is to be able to store electricity more effectively. Why go to the moon and explore the rest of the solar system when what we really need is to store energy here. We are never going to get to live on another planet, we won't be around for long enough, so why bother exploring there?
Planting trees is a great idea, but not at the cost of good farmland. Have smaller fields like in the 1950s and 60s with trees around the edges. Small woods in the right areas.
Why would anyone think it was a good idea to kill off livestock when there's so much else we could do? It doesn't make any sense. Unless as
@1spuds and
@mr_cat have said, the real agenda is killing off humans...
I am all for averting climate change, but putting all our efforts into some wacky scheme to stop people eating meat is not going to avert climate change.