During my time in education I spent some time in climate change research while living overseas. Yes, global warming and climatic change are real; some debate as to whether it is due to natural causes or human causes, from my research I fully believe it is from human causes.
Despite this, (and I know the thread is not about the protesters as such) I do believe the protesters should have been sentenced. They are not in prison for raising awareness, they are in prison for things such as the blockades in London/M25 which caused huge disruption, meaning others missed their flights/holidays/hospital appointments/funerals/cancer treatments amongst other things. There is also the damage to public property or art treasures with paint/orange powder etc, necessitating thousands of pounds in clean-up. Protesting and the right to raise awareness should not come at the cost of damaging other's rights or causing unnecessary distress.
That said, we do have to do something. It would be better to raise awareness in peaceful ways, and ways in which engage the public rather than turning them against the idea of actually doing anything at all. Given the power of advertising on TV and social media they would be better fundraising and making some really good short, sharp docu-adverts which hit home and make people think, as a start.
The problem is, that as a global issue we can only begin to change the thinking and behaviour of our own country (and even that's difficult) not what other countries do. It is too easy to say we won't do anything because China/India/the rest of the world aren't listening.
The other problem is timescale. People only react when it affects them directly - look at the COVID pandemic. The world did something because people were dying then and there (and even then, there were the deny-ers). Climate change IS affecting the world (floods, storms, wildfires and so on) but not enough for all of us to be in danger of worldwide death right now, so people ignore it. They do not want to inconvenience themselves for the sake of three generations in the future.
As a country we could do so much with wind power, coastal energy generation, moving over to electricity entirely but power with that is produced ourselves. Every house should have solar panels on the roof for instance, but no-one wants to deface their home and who will pay for it? We could burn all our rubbish and use the power generated for clean energy production but they have discussed this since the 1960s and still we haven't built the very expensive plants to do this (and no-one wants such an industrial plant spoiling their view of the countryside).
Even amongst my own friends and family who are seriously worried about climate change and mankind's effect on the planet, as soon as I mention my own efforts at change - I only eat 2 meals a day, no longer fly, will give up owning a car as soon as I retire in the next few months, buy local produce and cook from scratch and so on - they immediately trot out the counter arguments: eg. my small contribution will do nothing well, families can't live like that, no point when governments won't listen and China is using coal...
To be honest, individuals won't do anything when it comes to making sacrifices themselves. Neither will governments, because they don't have the money, the resources, the know-how...nor do they want to lose votes. We will see the polar ice caps melt eventually, there will be desert down to Antarctica and up as far as the top of France, we will have intense heat, fresh water shortages and very small areas where human beings will migrate to in order to live (top of Scandinavia, parts of Greenland, Siberia)..... Problem is, we do not have direct proof of this, no-one believes the science and besides that, it's about 150 years away so no-one living cares that much either....
I find is very, very sad indeed.