Individual behavioural change en masse can have a measurable impact. The only times GHG emissions dropped in the 30+ years since the UNFCCC was formed and Kyoto / Paris agreements were put in place were 2008 and 2020/21.
And I think we all know what happened in those years.
Individuals are “demand” - shops, manufacturers and ultimately fossil fuel companies respond to demand. So it’s up to individuals to make changes en masse, and be brave and open and talk about it.
Renewable energy is one area where we can make better choices. This should be cheaper but it currently isn’t. The government’s role here should be ensuring renewable energy is cheaper and incentivising its use. And allowing onshore wind - those turbines won’t be around for ever but we need them while more futuristic energy sources are developed. Let’s accept them for a few generations to help their kids survive.
Reducing or quitting meat & dairy is another huge area we as consumers can influence. Farmers should be able to adapt and provide the plant based proteins we need to replace them. Again the government can help here with grants and subsidies to convert.
And cycling / public transport must be made safe, comfortable and affordable. Taking a bus or train should be the obvious choice, and that means we need to demonstrate demand for those services. If we don’t use them and travel solo in cars, we’re causing them to shut down not become more available and frequent. Let’s shut down all the whining about cyclists and this weird UK cyclist / motorist confrontational culture. In other countries they build really good segregated infrastructure, and voila - it gets used. Netherlands, Denmark, Switzerland - just fantastic.
Where I live there is a need for a cycle route from the village into the city. Farmers oppose it because they anticipate “anti social behaviour” and are very much “not on my land” about it. This “default negative” attitude in the UK stinks, what happened to “can do” and “let’s try it” - so much moaning and very little excitement to progress !
Consumers have demand in their control, and working together we can engineer that demand to force the market to move faster into a more sustainable space.