Ok, I wouldn't consider myself a libertarian but on the political compass I usually land far down in the bottom-left-quadrant labeled as "left-libertarian" but I think one of the best ways to at least reduce climate change is to decentralize and self-organize the production of goods instead of leaving it to giant mass-producers who usually at least in the food-industry produce more than is needed to satisfy the demand meaning tons of food are usually thrown away and a lot of energy is wasted.
Another advantage of a decentralized production would be the reduction of the need for global logistics, currently one of the biggest CO2-polluters on the planet.
Additionaly it could also be useful to give up the patent-system and other information-monopolization-mechanisms that enable big corporations, etc. to keep competitors away from the market who may otherwise be able to create even better products than the information-monopolist. Instead I would even say it would be useful to make all information freely available for everyone enabling us to self-organize and decentralize the production of goods and to freely improve inventions.
Another more realistic and easier implementable but less efficient way could be the deregulation of some markets inside the classical political system. One example for a market in the EU stifled by too much regulation is the GMO-market.
While there are basically no regulations for organic and conventionally bred foods there are lots of regulations for GMOs that basically only enable big corporations like Monsanto, etc. to research and sell GMOs while keeping away small biotech-startups and non-profit DIY-bio-initiatives. More deregulation of the GMO-market in the EU would probably drive innovation f.e. maybe towards trees that could also grow in drier regions of the world allowing us to replant forests and bind more CO2 in them potentially halting or even decreasing climate change.
Although I think this deregulation-way inside this system could be at least a bit helpful I still think the best ways would be the decentralization of production and the complete liberation of information so that people are able to organize themselves to solve the problem of climate change and many other problems instead of letting authoritarian structures like nation-states and big corporations ruin everything with their stifling over-regulation and unsustainable mass-production.
RE: Steemit Libertarians: How would you address climate change? [dTube]