To stop indirect fossil fuel subsidies the polluting corporations must be charged the full cost by a carbon charge (it's not actually a tax).
Stop wasting time & public money on ideas that can't get near zero carbon.
- Stop subsidizing and supporting biofuels (more life cycle CO2 emissions than fossil fuels).
- Stop public funding of fossil fuel carbon capture R&D (coal industry boondoggle.)
- Give up on carbon trading
- Capping carbon emissions from fossil fuel emitters is fine, but does not lead to zero carbon energy and technology that has to be converted rather then capped.
Develop industrial scale capacity to extract CO2 direct from the air.
This is actually the bottom line for the survival of humanity. We can do everything else, but if we are unable to get some CO2 out of the atmosphere we fail and the future is over for humanity.
Stop all human source carbon dioxide emissions
Convert all fossil fuel energy sources and services to clean zero carbon.
Stop deforestation.
Convert to notill agriculture.
Convert off the internal combustion engine for transportation.
The above on vehicle engines will also control the toxic GHG ground level ozone
and zero fosssil fuels will give a very large reduction in black carbon and ground level ozone
as well as reducing methane to some extent.
Stop emitting black carbon soot.
Convert off the internal combustion engine (starting with diesel) for transportation.
Provide zero carbon cooking capacity to populations relying on burning biomass
to cook.
Stop emitting methane (CH4)
Methane is the meat GHG emitted by ruminant livestock especially cows.
It lasts in the atmosphere 12 years and has a global warming capacity over 10 years of 100X CO2.
It goes on heating after 12 years, because in the atmosphere it is converted to other GHGs notably CO2.
Convert to no till, zero chemical, zero industrial livestock, organic agro-forestry food production.
The meat heavy diet is responsible for 18% to 50% of methane emissions (according to studies). Stop subsidizing livestock and meat.
Stop warmongering and militarism
This should perhaps top the list. There is no chance of decarbonisation to any great extent all the time nations are warmongering and competing against each other. Decarbonisation is impossible so long as nations are manufacturing massive weapons of mass destruction that consumer massive amounts of fossil fuels to smelt and engineer massive amounts of metals and require massive amounts of oil to operate. International demilitarization and disarmament is an essential prerequisite for avoiding global climate suicide. The international economy of competitiveness is in fact a continuation of the World War economies.
Biochar
The only known way today to buy time by removing CO2 out of the carbon cycle (for over 100 years) is by making biochar from wood.
The process is pyrolysis. There is no such thing as any other long term sinking of carbon.
Other non carbon GHGs
Stop emitting nitrous oxide
Like CO2 N20 is highly persistent and cumulative in the atmosphere so emissions must stop.
It is 290 X the warming of CO2 and last 100 years.
It is emitted by the use of chemical nitrogen fertilizers and livestock manure waste.
Convert to no till, zero chemical, zero industrial livestock, organic agro-forestry food production.
Stop emitting halocarbons.
These human made chemical include the most potent and long lasting of all the GHGs.
They are used in manufacturing processes for which there are good alternatives. They must be banned.