[nickpsecurity]

If you want to contribute to climate change, I think you should push for more JavaScript/J2EE/.NET apps, 4K streaming, Big Data frameworks, mainframes, and proof-of-work blockchains. Make sure people build them in areas that generate electricity with non-renewable resources. Avoid any energy-saving tech in the datacenters, offices, or your home.

If you want to reduce climate change, I think you should just follow FroshKiller's advice. You might also evangelize solutions to the public and politicians that provide decent compromises with reduced pollutants. You should also pay campaign contributions to politicians most likely to do that as this counts more than ten thousand opinions from voters. These will collectively probably achieve nothing given industrial nations overall don't care about climate change vs money, jobs, and disposable goods. You'll at least be doing your part.