First of all, "reducing" carbon emissions by political means - a carbon tax, etc, won't work. You just get more expensive fuel, with more widespread poverty amongst those that can't afford the more expensive fuel, and you get a marginal reduction built upon the bodies of the poor that die in subzero weather trying to sleep under a bridge, or the bodies of the kids whose parents can't afford to take them to the doctor for some preventive care.
No, the strategy that works is to give the world's manufacturing back to the USA. We can now do all our manufacturing power including heating with natural gas, which is 80% of the vaunted "hydrogen economy" since methane, the main ingredient of natural gas, is 4 parts hydrogen and 1 part carbon which we burn very, very cleanly.
And to get the world's manufacturing back to the USA, the USA must pass the Fair Tax. Understanding this requires understanding that the US income taxes are what have been sabotaging US business for decades. They are the reason that manufacturing shuts down in the USA and pops up in Canada, Mexico, Southeast Asia, Russia, anywhere but the USA.
The Fair Tax abolishes absolutely all the income taxes, as well as the IRS, and does not tax business at all. Bill Archer, a former head of the House Ways and Means committee, commissioned a survey of 500 foreign CEO's and asked them, "What would you do if the USA passed the Fair Tax?" 400 of them said that they would build their next factory in the USA. The other 100 said that they would move their company's headquarters to the USA.
Doing the world's manufacturing in the USA would go a long way toward combatting the injection of further CO2 into the atmosphere.
Other than that, we need to get some smart physicists who know electrochemistry to invent for us the magic (cheap, high capacity, cheap, lightweight, cheap, physically small, and cheap) battery so that we can use it in electric cars and power our transportation. It does no go to generate TeraWattHours of electricity with natural gas, wind, solar, and so forth if we can't use it to get from point A to point B via cars, trucks, ships, boats, and airplanes. Converting transportation to electricity is the next big challenge. Do that, and the reason for whining about a global warming crisis will disappear. Whether it is real or it is the biggest hoax ever perpetrated upon mankind, achieving electric cars and natural gas fired electricity with as much wind and solar as we can afford to build, and taking manufacturing away from everyone else that can't do it as cleanly (virtually everyone) will be the ultimate solution.