benjhm

It's not necessary for world leaders (with all their entourage) to attend every year, and the total numbers should come down, it's a big waste of energy, especially regarding aviation emissions.
Only a handful of people in a few small rooms can actually change anything in the key decision texts - the other diplomats repeat old positions, and most other participants are just there to lobby for support for their projects.
I recall the early COPs - attended COP2 with only 2000 people, not 80k like last year. Also COP15 where world leaders did turn up, but didn't conclude.
The discussions leading to big decisions are are a multi-year process. COP30 next year in Belem, where new targets are expected, is more important than this year (fortunately, given weak choice of host government).

To save coral reefs they have to cut emissions of CO2, which has a direct effect on ocean acidification, even without temperature and sea-level rise. The symbiosis between algae and corals depends fundamentally on thermodynamics of carbonate chemistry, I doubt there's any techno-fix to get around that, however much money they get from their exclusive hotels.
So, Saudis, stop exporting oil.
Planting mangroves does sound like a good idea, but I don't know if it'd work in that location.

I'd say there might be an 'optimum' somewhere in between - on average slightly lower rate than replacement, aiming for sustainable decline without crisis, preserving cultural heritage - as human cultural diversity matters as well as biodiversity. But we lack intelligent discussion of this topic - partly as it’s hard for people to imagine intuitively how small annual changes integrate over time.I'd like to further develop my interactive model - designed for climate projections but including a demographic model, to help people experiment for themselves, including regarding potential changes in global migration fluxes.

As a kid, I learned to write i = i +1, before school maths taught me it can't. The point is, computers do iteration well, especially to model dynamics of real non-linear systems, while classical maths is good at finding algebraic solutions to equilibria - typically more theoretical than real. Calculus is great for understanding repeatable dynamics - such as waves in physics, also integrating over some distributions. But even without knowing that well you could still approximate stuff numerically with simple loops, test it, and if an inner-loop turns out to be time-critical or accuracy-critical (most are not), ask a mathematical colleague to rethink it - believe in iteration rather than perfect solutions.

Actually, if you swapped 'on' for 'by' (and cut 'US diminishment' etc.) you'd have a point there - Russian emissions per capita are among the world's highest and growing, while they decline in the rest of the north - most commentators don't notice as Russia has no NGOs left to shout about it.
(Note emissions fell since 1992 but from an even higher peak - while soviet industry produced that huge stockpile of missiles, tanks etc. now being used up). Also there are potentially huge climate feedbacks in Siberian forests and tundra, and we should be cooperating globally to help manage that. Maybe 'europe from lisbon to vladivostok' was a missed opportunity. I crossed siberia by train, helping local scientists attend COP3 in Japan, even studied many russian songs. Maybe one day we'll cooperate again. But now I and many others here think the only way to end these wars, is for russians to dump their crazy leadership which started them.

I'm not an expert on biodiversity, although I'd like to be. Of course extinction is forever, and habitat loss is exacerbated by climate feedbacks. But we have to accept change, making less fuss about protecting 'native species' (to me this feels rather like nativism wrt human immigration), and recognise that life on earth has suffered and survived worse calamities in geological history, so it will re-adapt to new situations, if we let plants and animals (including ourselves) move with the climate. We can't save all the old ecosystems (for example from considering thermodynamics of the symbiosis within coral reefs, I have little hope for their survival with combination of higher T and CO2 and SLR), but we might help create new opportunities for new ecosystems in new places. In this context, what matters is the rate of changes - as it takes time for trees to grow, soil to accumulate - rather than 'equilibrium' changes.
I don't know whether the OP was specifically reacting to lack of progress at the Biodiv COP16 in Cali, as well as US election and climate news, but as an old hand at COPs too, I hadn't expected much, at the end of these circuses the only certainty is that the show must always go on (or diplomatic teams would kill their own job). In my opinion both COP processes have got bogged down talking mainly about money, and the UN system as a whole has not been working for many years, so we need some radical rethinking about global cooperation. Nevertheless on a local and regional level plenty of positive things are still happening. Also human population growth is also peaking, or heading that way, on all continents except Africa, and in many countries there is reforestation recently.
In general, bear in mind that many big science consortiums publish reports around this time of year, with extra-worrying headlines, in a bid to influence the COP processes. This is just part of the new-normal seasonal cycle, like the grey skies where I live, but not a reason to lose hope - brighter days will follow.

Hey, I study curves of climate change for decades now, and can tell you there is hope.
The world probably just passed peak global emissions - mainly due to China, which counts for a lot more than USA, whose emissions were falling anyway - that trend may slow down but not stop - as renewables are cheaper now. China is manufacturing most renewable stuff now, but the science that drove the transition was led by europe and US, the work wasn't wasted. Indeed, peak emissions is not peak concentration, and there's a lot of inertia in the deep ocean and ice-caps, so temperatures will keep rising during my lifetime, but peak temperature, at least below 2ºC, is foreseeable now, we are succeeding to bend those curves.
That wasn't the case when I lost hope, due to the gap between climate science and policy, back in late 1990s. But I’m still alive now, and glad of it, and would like to stay around longer to see how the future evolves, only wish I'd prepared better for later life, as it's a long path, not easy but challenges can be inspiring, no simple answers but the complexity is beautiful. Keep going.

From the photos, it also appears that the "sun god" isn't strong enough to penetrate the seasonal smog (maybe that's what they're praying for?).

I'm aware of the racism issue, I even observed it myself in China, even many years ago.
But i've also seen similar problems in other corners of the world. Such cultural concepts can change slowly, as they did over here.
Anyway, I doubt this would dissuade people trying to connect what will become the world's main supply of surplus young labour, with the world's greatest demand for care-services, combined with spare apartments, money, and a milder climate. Not saying it’s good or bad, just trying to anticipate future changes.

Indeed that piece of evidence suggests it, but did CCP really want republicans in power? They are all authoritarians, but those can end up fighting each other, just starting with the trade war that has been promised.

I agree. For global discussions, are many Indians going to learn Chinese, Swahili, Hausa, Arabic, and vice-versa ? Meanwhile international-english is the new latin... Even within India, the south insists to keep english as an official language, to avoid being dominated by more populous hindi-speaking north.
Alternatively LLM-translation may facilitate multi-lingual discussion, but in this case the language of software development may still be influential during such transition.
By the way - this is an important topic for future of lemmy, which should expand more towards the south - where's a good place to develop it (beyond such set of replies)?

article doesn't consider the agenda of the owner of X and its algorithms