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Welcome to Carbon Brief’s DeBriefed.
An essential guide to the week’s key developments relating to climate change.

This is an online version of Carbon Brief’s weekly DeBriefed email newsletter. Subscribe for free here.

This week

Hottest year on record

RISING TEMPERATURES: There is a greater than 99% chance that 2023 will be the hottest year on record, according to new Carbon Brief analysis. The analysis combined multiple temperature datasets to conclude it is “virtually certain” that this year will be the hottest for millennia. After a cooler start to the year, the past four months have seen truly exceptional global temperatures, surpassing prior monthly records by large margins, according to the analysis.

MYSTERY HEAT: Dr Gavin Schmidt, director of the NASA Goddard Institute for Space Studies, told the Washington Post that “it is indeed hard to give a good and informed answer to why this is happening – possibly for the first time”. Dr Zeke Hausfather, Carbon Brief’s climate science contributor who undertook the analysis, wrote in the New York Times that the ”acceleration” in warming “means that the effects of climate change we are already seeing – extreme heatwaves, wildfires, rainfall and sea level rise – will only grow more severe in the coming years”.

Fossil fuels under fire

ONE VOICE: The European Union has agreed to push for the “phase out” of all fossil fuels at the upcoming COP28 climate summit in Dubai in late November, Reuters reported. This could set up the bloc “to be one of the most ambitious negotiators” at the summit, according to the newswire.

FIGHTS FUELLED: Climate Home News reported that “negotiators from Africa and India have set out separate plans to push developed countries to do more to move away from fossil fuels” at the summit. Meanwhile, Axios reported that the host of the talks, UAE’s Sultan Al Jaber, has called for “a responsible phasedown of unabated fossil fuels”.

LOSS AND DAMAGE: Elsewhere, the Financial Times reported that countries are at odds over how to run the “loss and damage” fund agreed at the COP27 climate summit in Egypt last year, which was widely viewed as a historic step forward for climate justice. According to the FT, representatives from the negotiating bloc of G77 nations plus China, a large coalition of developing countries, were “considering abandoning” discussions underway in Aswan in Egypt amid a push from the US to allow the World Bank to be in charge of the fund.

Around the world

  • BRAZIL DROUGHT: The Amazon river’s water level fell to its lowest in more than a century, leaving boats stranded and cutting off food and water supplies to remote villages, CNN reported.
  • GREEN BELT: According to Xinhua, Chinese president Xi Jinping said the country will double down on green development “as one of the major steps to support the joint pursuit of high-quality belt and road cooperation”. (The belt and road initiative is China’s major infrastructure venture involving many developing nations across Asia and Africa.)
  • UK HEAT: The UK’s National Infrastructure Commission has urged the government to phase out gas boilers and spend billions on rolling out heat pumps, the Daily Telegraph reported.
  • CLIMATE STALEMATE: Russia’s opposition to holding the COP29 climate summit in an EU nation in eastern Europe next year has “left nations scrambling to find an alternative in time to organise the massive global event”, Reuters reported.
  • OIL AND GAS DASH: The secretary general of the Organization of the Petroleum Exporting Countries (OPEC), Haitham Al Ghais, said Africa should be allowed to use its oil and gas to fight energy poverty, “a position often repeated by the fossil fuel industry to increase oil production on the continent”, Reuters reported.

£492bn

How much global investment in electricity grids is needed annually by 2030, if national climate targets and reliable power supplies are to be achieved, according to a new report from the International Energy Agency (IEA) covered by the Guardian.


Latest climate research

  • The world may have reached a “global irreversible solar tipping point”, where solar energy gradually comes to dominate global electricity markets – even without any further climate policies, a new paper in Nature Communication suggested.
  • A new analysis in Climate Policy discussed ways to better integrate the perspectives of livestock keepers in Kenya, Ethiopia and Uganda in indicators for tracking climate adaptation, which tend to be limited to government documents only.
  • Limiting global warming to 2C above pre-industrial levels would leave the Asia-Pacific, Europe and the US “highly exposed to “stranded assets”, especially coal plants”, a new paper in Nature Communication found.

(For more, see Carbon Brief’s in-depth daily summaries of the top climate news stories on Monday, Tuesday, Wednesday, Thursday and Friday.)

Captured

Toxic algae on UK’s largest lake

True-colour satellite image from 4 September 2023 showing algal bloom conditions on Lough Neagh in Northern Ireland.

Lough Neagh – a lake in Northern Ireland that is larger than the country of Malta – has been plagued by blue-green algae that can negatively impact humans, plants and animals. The image above shows the blooms visible from Copernicus satellite imagery on 4 September. The green swirls of algae are particularly noticeable on the eastern side of the lake. Scientists told Carbon Brief that agricultural nutrient runoff and climate change are the main roots of the problem – and that there is no “silver-bullet” solution.

Spotlight

Adenike Oladosu

A young activist’s campaign to save Africa’s vanishing Lake Chad

This week, Carbon Brief speaks to young Nigerian climate activist Adenike Oladosu about her work to raise awareness about the rapid disappearance of Lake Chad.

The discussion of climate change is not a priority in many African countries, but it is driving some of the most striking upheavals across the continent. One example is the shrinking Lake Chad, which has been linked to conflict and migration in the Sahel. Once the world’s sixth-largest lake, it has shrunk by around 90% since the 1960s.

Adenike Oladosu learned about Lake Chad’s precarious state while researching herdsmen-farmers conflicts as a university student in Nigeria’s middle-belt region. She was surprised that an issue usually framed as an ethnic war was essentially a fight for depleting resources.

Inspired by the likes of Swedish activist Greta Thunberg, Oladosu decided to begin a Fridays for Future climate strike in Abuja, Nigeria’s political capital. She printed climate signs and stood alone at busy intersections; she also went to schools and churches. Soon, other young people joined her.

“The world needs to know about Lake Chad, because it doesn’t affect Nigeria alone, it affects the country around, including Niger, Chad and Cameroon,” Oladosu said. “My understanding is the fact that if you don’t know that a problem exists, you can’t solve it. Understanding that a problem exists is the first step towards solving the problem itself.”

On Twitter, Oladosu is relentless about campaigning for the restoration of Lake Chad. And she believes awareness about the issue is growing. In November 2022, on the campaign trail, Nigerian president Bola Tinubu promised to “recharge” the lake.

Earlier this year, as a fellow of the “planetary scholar and artists in residence” programme at the Justus Liebig University in Germany, Oladosu used remote-sensing technologies to observe and present the lake as a threatened space, raising more awareness about “the planetary dimensions of the crisis.”

For Oladosu, the shrinking of Lake Chad is also an issue of climate justice, which is connected to human rights. As of August 2023, more than six million people were living as displaced persons in the Chad basin, according to the UN. If Lake Chad was in Germany, she questioned, would it have shrunk by 90%?

Ahead of COP28, Oladosu joined the ONE campaign team in October to lobby for African priorities at the EU parliament in Brussels. For her, the restoration of Lake Chad should be one of the issues to take centre stage at the climate summit. She told Carbon Brief:

“If Lake Chad dries out it could become a battlefield for terrorists. If we want to achieve peace and security in the region, recharge Lake Chad in order to strengthen the livelihood in the region. This could be done through climate finance. Also, Lake Chad isn’t just an economic issue, it is a cultural site that unites. This is a decade of ecosystem restoration, Lake Chad should not be left behind.”

Watch, read, listen

CLIMATE WRECK: On the podcast Inherited, storyteller Mo Isu traced the repetitive cycle of loss and rebuilding in the rural Niger Delta region of Nigeria as the country weathers extreme seasonal flooding.

LOOKING BACK: Grist examined the historical link between environmental disasters and societal collapse.

GREENWASHING: The New Yorker reported on how a major carbon offsets firm sold millions of credits for carbon reductions that “weren’t real”.

Coming up

Pick of the jobs

DeBriefed is edited by Daisy Dunne. Please send any tips or feedback to debriefed@carbonbrief.org

The post DeBriefed 20 October 2023: Earth’s hottest year ‘for millennia’; Countries set out stall on fossil fuels; Saving shrinking Lake Chad appeared first on Carbon Brief.

DeBriefed 20 October 2023: Earth’s hottest year ‘for millennia’; Countries set out stall on fossil fuels; Saving shrinking Lake Chad

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Hardline Conservative Wins Republican Primary for Texas Oil and Gas Regulator

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Bo French prevailed over incumbent Jim Wright after a primary campaign focused more on Islamophobia and deportations than oil and gas regulation.

Bo French has won the Republican nomination to help run a little-known but influential regulatory office in Texas that oversees the state’s oil and gas industry.

Hardline Conservative Wins Republican Primary for Texas Oil and Gas Regulator

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Q&A: Can China turn hydrogen into its next clean-energy industry?

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China has said that hydrogen is a key “future industry”, important to both its energy transition and its industrial policy.

Hydrogen frequently goes through hype cycles, most recently driven by rising oil and gas prices due to the conflict in the Middle East.

Yet, even in China, the world’s largest producer and consumer of the fuel, hydrogen remains expensive and inefficient to produce.

This is especially the case for “green” hydrogen derived from renewables.

Moreover, there is limited supporting infrastructure and there is little incentive to use hydrogen over other energy sources.

As a result, uptake in China of hydrogen as an alternative fuel remains low.

Nevertheless, these challenges echo the early circumstances of another key clean-energy technology – electric vehicles (EVs).

In China, EVs benefited from a policy environment that included consistent signals of support, financial aid and the development of supporting infrastructure.

Many similar policies are now being deployed – and in some cases improved upon – to support the development of China’s hydrogen industry.

This article examines China’s approach to developing hydrogen and how its evolving industrial policy could make the fuel viable.

How is China using hydrogen and where does it come from?

Electrification and rising installations of solar and wind power have been the biggest drivers of China’s decarbonisation story so far. However, how China will address the more energy-intensive, hard-to-electrify segments of its economy remains an open question.

Hydrogen is seen by some in China as a potential solution for reducing emissions in a range of “hard-to-abate” industries, from steel and chemicals to aviation and shipping.

The country is the world’s foremost producer and consumer of hydrogen. It produced 36.5m tonnes of the gas in 2024, with maximum production capacity standing at 50m tonnes that year.

It also consumed nearly a third of the world’s hydrogen in 2024, as shown below.

Share of global hydrogen consumption in select regions in 2024
Share of global hydrogen consumption in select regions in 2024, %. Source: IEA.

Most of China’s production capacity is in regions with potential for high demand, such as Shandong, Inner Mongolia, Shaanxi, Ningxia, Shanxi and other provinces with significant heavy industry.

In 2024, the vast majority of China’s hydrogen – around 78% – was produced using fossil fuels, predominantly coal and gas, as shown in the figure below.

Another 21% was produced as an industrial by-product, while only 1% – just 320,000 tonnes – was derived from renewable-powered electrolysis of water.

Production of hydrogen in China by energy source in 2024
Production of hydrogen in China by energy source in 2024, %. Source: National Energy Administration.

One study found that, for every kilogram of hydrogen produced, 38.6kg of carbon dioxide (CO2) is emitted if the hydrogen is produced using coal-fired power. Hydrogen made through coal gasification results in 28.5kg of CO2 for every kilogram of hydrogen, while gas-based hydrogen creates 13kg of emissions.

By contrast, one kilogram of renewables-based hydrogen results in 0.5kg of CO2.

The International Energy Agency (IEA) calculates that hydrogen and hydrogen-based fuels could help China avoid close to 16bn tonnes of CO2 cumulatively by 2060 – but only if it comes from low-carbon sources.

The biggest reductions, it adds, would come from heavy industry, particularly chemicals and steel, with the maritime and shipping sectors also seeing some benefit.

Currently, around half of the hydrogen produced in China is used in synthetic ammonia and methanol production.

Ammonia is primarily used to manufacture fertiliser and is seen as a possible fuel technology for shipping. Methanol is used as a fuel for the transport industry, as well as for heating.

Another quarter of China’s current hydrogen usage is consumed by the oil refining and coal-to-chemical sectors. The remaining amount is used in other industries, including transport, heating and metallurgy.

What are the barriers to scaling up hydrogen?

Although China is the largest producer and consumer of hydrogen globally, the industry faces several barriers to becoming a viable clean-energy technology.

Agora Energiewende, a thinktank focused on the energy sector, says that, in order to make hydrogen a practical clean-energy solution, China would need to expand the scale and range of its application, as well as improving the conversion efficiency of production and use.

Both BloombergNEF and the IEA highlight the importance of China creating demand for hydrogen, such as through quotas for industrial usage.

Hydrogen “suffers from a relatively large efficiency loss during various conversion processes”, adds Agora. For example, it notes that only around 22% of the energy put into hydrogen fuel-cell electric vehicles (FCEVs) is converted into motion, compared to 73% for battery electric vehicles. Producing hydrogen with renewable energy is also less efficient than coal-to-hydrogen processes.

Cui Chuansheng, technical director at East China Engineering Science and Technology, tells state news agency Xinhua that the variability of wind and solar power often leads to low utilisation of electrolysers, resulting in “efficiency losses”.

Meanwhile, the cost of producing hydrogen – particularly green hydrogen – remains high.

One study placed the cost of hydrogen produced through alkaline water electrolysis (AWE), the most common method for producing green hydrogen in China, at $4-6 per kilogram, compared with $1.20-2.50/kg for steam methane reforming and $1.30-2 for coal gasification.

In some specific cases, such as blending hydrogen with gas, researchers find that hydrogen prices would need to fall to one-third of gas prices to incentivise uptake.

These constraints are all “interdependent”, Kevin Tu, managing director of Agora Energy China, tells Carbon Brief, with the need to ensure “bankable demand” while also reducing costs and developing infrastructure. He adds:

“Without credible offtake in the right sectors, costs will not fall; without lower costs and better logistics, downstream users will not commit.”

The IEA says that green hydrogen “could become cost-competitive by the end of this decade due to low technology costs and cost of capital”.

For now, however, the China Hydrogen Bulletin Substack reports that China’s four listed hydrogen equipment manufacturers all reported significant losses in 2025.

Meanwhile, a senior executive at a Chinese hydrogen company told economic news outlet Jiemian that he expected 40% of companies in the sector to have closed down by the end of 2026, with surviving companies only turning a profit in 2029 at the earliest.

The industry also lacks refueling and pipeline infrastructure. China’s development of a pipeline network for hydrogen remains in its early stages, with around 400km of pipelines currently in operation. By contrast, its long-distance gas network stands at 128,000km. Similarly, storage remains expensive and inefficient, creating a further obstacle to wider uptake.

How is China supporting hydrogen development?

China began considering the use of hydrogen as an energy source in earnest in the early 2000s, to address concerns around pollution and dependence on imported oil for the transport sector.

A clearer signal of its importance came in 2015, when the State Council included the technology in a 10-year national industrial strategy known as the “Made in China” initiative. This pitched hydrogen as a way to contribute to electrification of China’s road-transport system through the development of FCEVs.

Yuki Yu, founder of research firm Energy Iceberg, tells Carbon Brief that, from 2018-2021, hydrogen was treated as a “FCEV and manufacturing technology challenge”.

This has since evolved, she says, given that battery electric vehicles have emerged as the more popular technology.

Shen Xinyi, senior advisor at the Centre for Research on Energy and Clean Air (CREA), agrees, telling Carbon Brief that recent policy documents suggest the aim is now for hydrogen to be targeted at areas where direct electrification is harder, such as hydrogen-based chemicals, hydrogen metallurgy and some heavy-duty transport applications.

This is in line with the “hydrogen ladder”, an analysis of how likely different possibilities for applying hydrogen as a clean alternative are to become significant. The ladder sees significant future use of hydrogen in these hard-to-electrify areas as much more likely than for light vehicles.

Notable policy moves are being made in “three layers”, says Agora’s Tu, which are combining to improve the technology’s chances of scaling up. These are: the “legal and institutional” layer; “application-oriented” policies; and targeted measures to address “practical bottlenecks” at the local level.

One of the documents underpinning this pivot was the “medium- and long-term plan for the development of the hydrogen energy industry (2021-2035)”, issued in March 2022.

According to a report by the National Energy Administration (NEA), the plan is an attempt to develop an “industrial ecosystem” for hydrogen that features “diverse stakeholders, coordinated innovation and clustered development”.

The plan was the first government document to “lay out a long-term vision for China’s hydrogen economy”, unifying a previously disparate policy push into one document, according to the Oxford Institute for Energy Studies, a UK-based thinktank.

Following on from the 2022 plan, the importance of hydrogen as a broad clean-energy solution has been emphasised in a number of policies. These include its classification being changed from a hazardous chemical to an energy carrier in China’s Energy Law, a 2024 action plan to “accelerate” the use of low-carbon hydrogen in industry and a new pilot scheme offering subsidies for projects that achieve specific targets.

The table below sets out the timeline and content of China’s hydrogen-related policies over the past 25 years.

Policy Year published Key features
10th five-year plan (2001–2005) 2001 Calls for “actively developing” low-emission vehicles, understood to include hydrogen vehicles
Made in China 2025 2015 Pledges to “continue to support” development of fuel cell vehicles and “master core technologies” for low-carbon vehicles
Notice on implementation of demonstration projects for fuel cell vehicles 2020 Creates a dedicated subsidy programme for finding breakthroughs in FCEV core technologies and industrial applications
14th five-year plan (2021-2025) 2021 Hydrogen listed as a future industry
Medium- and long-term plan for the development of the hydrogen energy industry (2021–2035) 2022 Aims to reach 100,000-200,000 tonnes of green hydrogen production [this target has been met]. Also aims to get 50,000 FCEVs on the road by 2025, leading to a “diversified” hydrogen industry by 2035
Opinions on accelerating the comprehensive green transformation of economic and social development 2024 Promotes further development of hydrogen production, transport, storage and applications
Implementation plan for accelerating the application of clean and low-carbon hydrogen in the industrial sector 2025 Outlines tasks to promote use of low-carbon hydrogen to reduce emissions in heavy industries, such as steel and chemicals
Energy law 2025 Sees hydrogen included in national legislation for the first time, re-classifies it from a hazardous chemical to an energy carrier
15th five-year plan (2026-2030) 2026 Again lists as a future industry, and calls for the development of green fuels derived from green hydrogen
Notice on the implementation of pilot projects for the comprehensive application of hydrogen energy 2026 Provides subsidies to projects to reduce hydrogen costs to 15-25 yuan/kilogram ($2.20-3.67/kg) and help develop a fleet of 100,000 FCEVs

Key policies in the development of China’s hydrogen sector.

In addition, the NEA said in 2025 that local governments across China had issued more than 560 hydrogen-related energy policies by the end of 2024.

Tu notes that these local policies cover everything from permitting reforms and pipeline planning to exempting FCEVs from paying road toll.

Different provinces across China adopt distinct strategies for developing hydrogen industries, based on local conditions, says the US-based Center on Global Energy Policy, such as energy mix, availability of coal and industrial needs.

However, these local policies and targets are frequently more ambitious than the “conservative” national-level targets, it adds.

Could a new pilot programme boost hydrogen’s prospects?

A new pilot programme, announced in March 2026, aims to commercialise the country’s hydrogen industry by funding projects to reduce the cost of the fuel to 15-25 yuan/kilogram ($2.20-3.67/kg) by 2030, as well as other targets.

Unlike the 2020 subsidies, which focused on FCEVs, the new programme reaffirms China’s interest in a broader series of sectoral applications for hydrogen, including in clean heating, production of low-carbon iron and steel, and production of “green fuels” and other chemicals.

This new pilot is the “strongest financial instrument ever released for China’s green hydrogen application” in terms of creating a comprehensive hydrogen policy that covers a broad swathe of the economy, supporting it with financial backing and targeting application scenarios, Yu says.

However, she argues that strict grant caps – 240m yuan ($35m) per project and 1.6bn yuan ($235m) per selected region across only five regions – limited the overall funding scale available to the industry.

Energy Iceberg has calculated that only around 60-70 projects nationally could receive funding under the current rules, out of more than 670 active green hydrogen proposals in China.

Shen agrees that the pilot programme is significant and that it will expand the use of hydrogen in China’s climate strategy, particularly green hydrogen.

She notes a provision that “explicitly states that coal-based ammonia and methanol projects cannot be labelled as ‘green’ ammonia or methanol”, suggesting that policymakers are increasingly paying attention to the “integrity” of definitions for hydrogen and hydrogen-derived fuel.

The “real value” of the pilot scheme, says Tu, is that it focuses on developing “integrated city-cluster ecosystems linking supply, transport, infrastructure and end-use demand”, rather than only supporting individual projects.

This “should help identify viable business models, accelerate cost discovery and concentrate support on applications with stronger scale potential”, as well as boost investor confidence, adds Tu.

However, he continues that the broader effect it will have on boosting production of hydrogen will “depend on how quickly the selected clusters can translate the programme into real offtake and lower delivered hydrogen prices”.

How does this compare to China’s EV policy push?

The debate around the viability of hydrogen is reminiscent of critiques of EVs.

Until recently, EVs were seen as too expensive for consumers, inefficient and challenging to use without supporting infrastructure. As a result, many western automakers chose to temper their focus on EVs, while continuing to develop internal combustion engines.

However, China has managed to develop a competitive EV industry with products that top global sales.

Part of the playbook that spurred China’s success on EVs included consistent policy signalling in favour of the technology, including mentions in high-level documents and committing resources to building charging infrastructure.

“The defining features of China’s industrial-policy success are its persistence and adaptability,” says Kyle Chan, fellow at the Brookings Institution, adding that “long before the technology and economics of EVs and batteries were proven, China was making long-term investments and policy bets [in the sectors]”.

More tangible measures included direct and indirect subsidies and policy support in the shape of favourable loan rates and low-cost land. One estimate by US-based thinktank the Center for Strategic and International Studies (CSIS) pegs the amount of support allocated to the EV industry between 2009-2023 at $230.9bn.

This coupled with the success of private Chinese manufacturers in creating innovative, nimble companies that “forc[ed] policymakers to adapt”, as well as growing links between the automotive and information technology industries, according to a separate CSIS report.

But this progress on EVs also reportedly came with significant fraud. In 2016, one investigation found that 33 companies were involved in subsidy fraud totalling 9.2bn yuan ($1.3bn).

(It should also be noted that profitability in the industry lags far behind the average for downstream industrial sectors, according to the Hong Kong-based South China Morning Post, which says that “only a handful” of nearly 50 EV makers have reported profits.)

Being the subject of an industrial policy push alone does not guarantee success, states CSIS. It says the strength of the EV industry “was neither inevitable nor the result of a single master plan” and that China’s aims to develop globally-competitive industries in areas such as commercial aviation remain unaccomplished.

China’s approach to hydrogen has been markedly different.

Instead of offering blanket subsidies, the fuel cell demonstration programme it established in 2020 focused on performance-based rewards.

To avoid the subsidy issues seen in the solar and EV industries, the ministry of finance deliberately chose this indirect funding model, says Yu.

However, Yu argues, the programme did not work as well as hoped, due to the funding ceiling and the siloed attempts made by different regional governments to develop hydrogen ecosystems .

But Chinese policy thinking is becoming more selective and pragmatic for hydrogen compared with EVs, says Shen. She says:

“Electrification remains the primary decarbonisation pathway [for road transport], while hydrogen is increasingly positioned for applications where direct electrification is more difficult.”

Tu echoes this, adding that China is “clearly moving toward a more supportive policy environment for hydrogen”.

But its approach is “unlikely to replicate the EV story one-for-one”, he adds.

China’s concerted hydrogen push is also unlikely to echo the EV story at a global level, according to the IEA.

In terms of green hydrogen, around 60% of global electrolyser manufacturing capacity is currently in China, prompting concerns from the EU about a repeat of China’s global dominance in the solar and EV sectors.

However, the IEA says, electrolysers made in China “might not supply other markets at scale in the short term”, due to difficulties transporting the bulky technology globally, expectations that costs will only fall gradually, uncertainty around global demand and questions over how well Chinese electrolysers perform against global alternatives.

China’s industrial focus on hydrogen is centred more on domestic use, Shen argues. “It is less about near-term export competitiveness and more about building domestic industrial ecosystems,” she says.

The post Q&A: Can China turn hydrogen into its next clean-energy industry? appeared first on Carbon Brief.

Q&A: Can China turn hydrogen into its next clean-energy industry?

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In Venezuela, Anxiety About Ramping Up Oil Production in the Heavily Polluted Lake Maracaibo Region

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Experts and local activists, wary of past exploitation, are hoping it will be different this time—but aren’t confident it will be.

There is a joke Mónica Godoy Molero likes to make with her family: if you swim in Venezuela’s Lake Maracaibo after an oil spill, you’ll sprout a third eye.

In Venezuela, Anxiety About Ramping Up Oil Production in the Heavily Polluted Lake Maracaibo Region

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