Other problems - cost-of-living, inflation, depleted coffers from the pandemic, housing, the war in Ukraine, US-China relations, and an energy crisis in Europe - are overshadowing the climate talks.
Emissions keep rising when they need to be about halved by 2030 - now almost seven years away. The previous eight years were the hottest ever recorded, a UN report finds. European temperatures have increased at more than twice the global average over the past 30 years.
What’s needed is to take stock of what can be done and what works, combined with a mindset among governments, local authorities, businesses and people generally that the stopwatch has started.
Some areas offer hope.
The European Union and United States this year passed packages on emissions reduction and to give green industries a push.
An even more accelerated expansion of renewable use to replace fossil fuels has to be a priority and can happen. Wind and solar are much cheaper than a decade ago.
Use of coal has increased during the economic recovery from the pandemic and the Ukraine war, but carbon dioxide emissions are less this year than last year, thanks to greater use of renewables and electric vehicles, energy think-tank the International Energy Agency reports. However, it says hydrogen power is vulnerable to drought in some regions and hundreds of millions of people still lack access to electricity.
Longer-term, the war and energy crisis could boost the transition to renewables as countries try to move away from Russian fossil fuels.
Sales of EVs are making rapid progress globally. That should only continue. Greater promotion and use of e-bikes and cycling have the potential to become a bigger part of transport strategies.
Greater energy efficiencies and use of electricity for heating are important trends. IEA forecasts that heat pump installations will reach the 600 million mark by the end of the decade, representing 20 per cent of global heating requirements.
There could also be tougher action taken against polluting companies. A Nasa space instrument has been able to spot plumes of methane from leaking oil and gas facilities on earth.
COP27 has the chance to make its mark on the thorny problem of “loss and damage” - or compensating poorer countries dealing with the impact of climate disaster. Campaigner Greta Thunberg advocates for a “loss and damage finance facility”.
Developing countries are on the front line of a climate war, but countries that could do the most to change the environmental trends are not yet on a war footing.
