Sure, every little bit helps. But to avoid long-term catastrophe we have to get net carbon emissions down to pre-industrial levels. A 50% reduction sounds good on paper, but it's a trap. Suppose we achieved it. Then what? We're still increasing the overall CO2 concentration, just at a slower pace. That won't help us avoid catastrophe, it just delays it for a while, and probably not for very long. LNG is not a step towards a solution, it's a detour that leads back to catastrophe by slightly longer route.

50% is not good enough.