Carbon capture does not work, and is a harmful distraction

...due to a fundamental error in it’s representation of the carbon cycle, BECCS could never work, but also why such ‘sci fi’ climate solutions are so prevalent and so dangerous. Even if these kind of solutions have no realistic possibility of being viable, they allow politicians and businesses to give the impression that they are committed to reducing emissions and have strategies to do so. Thus, like the walking dead, new publicly subsidised demonstration projects continue to pop up as others die off.

https://corporatewatch.org/the-zombie-technofix/ 

Nuclear energy may not even be carbon neutral

Greenhouse gases are emitted in all stages of the lifecycle of a nuclear reactor: construction, operation, fuel production, dismantling and waste disposal. Leaving out any of these five stages will bias estimates towards lower values.
The last two contributions, dismantling and waste disposal are particularly difficult to estimate. Not many commercial reactors have been fully decommissioned. Also there is still no scientific or political consensus on the approach to be used for the long-term storage of waste.
The fuel preparation contribution is also problematic. Considerable amounts of carbon are released in the mining, milling and separation of the uranium from the ore. Also the carbon emitted is very dependent on the concentration of uranium in the ore.
It's important to appreciate that these three problematic contributions, fuel production, dismantling and waste disposal are either non-existent or small contributions in the case of electricity generation by renewable technologies. Estimates of the carbon footprint of renewably generated electricity therefore should be much more reliable than those for nuclear.

https://theecologist.org/2015/feb/05/false-solution-nuclear-power-not-low-carbon

Hazardous chemicals in solar panels

During manufacture and after the disposal of solar panels, they release hazardous chemicals including cadmium compounds, silicon tetrachloride, hexafluoroethane and lead.

https://sciencing.com/toxic-chemicals-solar-panels-18393.html 

Carbon offsets via forest protection [REDD] are mostly myth

REDD-Monitor : "It is entirely untrue that all 13 of the projects have stable tenure over forest lands. Several of the communities have entirely collapsed with no practical management over forest lands. 15 year agreements with the Forestry Administration which can be revoked at any time, and which in practice have been entirely undermined by the presence of the Royal Cambodian Armed Forces in no way constitutes secure tenure. There are now entire villages located within core project forests which community members have been powerless to stop. A large tract of the largest community forest area is also to be submerged by a Chinese built dam, yet the temporary forest agreements were ignored."

Using methane hydrate for fuel a deadly mistake

BBC News: "Quite apart from reaching them at the bottom of deep ocean shelves, not to mention operating at low temperatures and extremely high pressure, there is the potentially serious issue of destabilising the seabed, which can lead to submarine landslides.

A greater potential threat is methane escape. Extracting the gas from a localised area of hydrates does not present too many difficulties, but preventing the breakdown of hydrates and subsequent release of methane in surrounding structures is more difficult.

And escaping methane has serious consequences for global warming - recent studies suggest the gas is 30 times more damaging than CO2."

Subsidizing carbon emissions and calling it carbon neutral

World Economic Forum: "Needless to say, it does not make economic sense to import eight million tons of wood pellets yearly across the Atlantic Ocean. However, the British government has provided over $1 billion in annual subsidies to utilities to pay the cost of pellet production and transport."

Autonomous vehicles mean more sprawl

CityLab : "One school of thought on autonomous vehicles holds that they’ll increase traffic and sprawl: Without expensive fuel and the soul-gnawing investment in time wasted commuting behind the wheel, people will feel the pain of driving less, live even further away from urban centers, and basically use robot-cars for all manner of frivolous pursuits."