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
Carbon Brief investigates offsets
SPECIAL WEEK: After months of interviews, research and data-crunching, Carbon Brief this week published a special series of content on the topic of carbon offsets. On the first day, Carbon Brief launched an in-depth explainer on whether carbon offsets can help to tackle climate change, a glossary laying out more than 60 of the key terms and phrases, an infographic illustrating the typical journey of a carbon offset and a timeline detailing the 60-year story of how offsets went from an idea to make polluters think about their damage to a major feature of country and business climate targets.
MAPS AND DATA: Later on in the week, Carbon Brief published an interactive map detailing the impacts of individual carbon-offset projects around the world. We also released a series of in-depth Sankey diagrams illustrating how offsets flow from the world’s most polluting companies to projects in the developing world. Separately, we published an explainer into how “biodiversity offsets” are rising in popularity, posing comparable moral questions to carbon offsets.
WEBINAR: Carbon Brief finished its special week by holding a webinar on whether carbon offsets can be reformed. It featured Dr Barbara Haya, director of the Berkeley Carbon Trading Project at the University of California, Berkeley; Kaya Axelsson, net-zero policy engagement fellow at the University of Oxford; Laura George, governance and rights coordinator of the Amerindian Peoples Association in Guyana; and Pedro Barata, associate vice president of carbon markets at the Environmental Defence Fund and co-chair of the Integrity Council for the Voluntary Carbon Market’s expert panel. The webinar is now available to watch online.
UK ushers in more oil and gas
ROSEBANK APPROVED: In the latest twist in a remarkable month for UK climate policy, regulators this week granted final approval to the Rosebank oil-and-gas field, one of the largest new fossil-fuel projects in the North Sea in decades. The project has the potential to produce 300m barrels of oil and gas. When burned, this would produce the equivalent to the annual emissions of around 90 of the countries with the lowest emissions, according to analysis by Carbon Brief’s Dr Simon Evans.
TORY TURMOIL: The decision sparked more strife within the country’s ruling Conservative party. According to the Independent, Conservative peer and former minister Zac Goldsmith told BBC Radio Four’s PM programme: “It just trashes the UK’s reputation as a reliable, grown-up member of the global community, it’s done us immeasurable harm…The party that loses sight of the overall goal [of climate action and environmental protection] is not one that deserves to be given the privilege of power.” It comes after a frontpage story in the i newspaper on Monday reported that 100 of the country’s economists had written a letter arguing that prime minister Rishi Sunak’s wider climate rollbacks could “raise the cost of living and cost Britain jobs”.
Around the world
- ‘EXCEPTIONAL’: Antarctica’s sea ice maximum – reached at the height of winter – was the lowest in the 45-year satellite record by “a wide margin”, Carbon Brief reported. One expert said Antarctic conditions had been “truly exceptional”.
- SPRING SCORCHER: Large swathes of South America have faced an intense spring heatwave, with temperatures reaching 43C in Brazil, Grist reported.
- SOUTH AFRICA FLOODS: At least 11 people have died after heavy rain and winds struck South Africa’s Western Cape province, BBC News reported. South African newspaper Daily Maverick spoke to scientists about the links to climate change.
- SHELL-SHOCKED: A leaked open letter posted to Shell’s internal web revealed that some employees have said they are “deeply concerned” about the company’s shift away from investing more in renewable energy, Reuters reported.
- YOUTH CLIMATE CASE: Six young people from Portugal on Wednesday began legal proceedings against 32 European countries in the European Court of Human Rights (ECHR) for failing to protect them against climate change in an unprecedented case, Euronews reported.
- NZ FARMER PROTEST: Reuters explored how “rural anger” over New Zealand’s climate policies, including tree-planting on grazing land, could usher in a return of far-right parties in an October election.
10%
The proportion by which the overall volume of Switzerland’s glaciers shrunk in the past two years, according to analysis covered by the Times.
Latest climate research
- The densely populated, low-lying delta river basins of the Ganges and Mekong in Asia will likely see fewer tropical storms in a warming world, but they will be more intense, according to new research in Geophysical Research Letters.
- Some 17% and 18% of new wind power projects faced local opposition in the US and Canada, respectively, from 2000-2016, found a study in the Proceedings of the National Academy of Sciences.
- A new Nature study challenged the idea that climate change is behind the rapid demise of insects globally by identifying the role of complex weather patterns.
(For more, see Carbon Brief’s in-depth daily summaries of the top climate news stories on Monday, Tuesday, Wednesday, Thursday and Friday.)
Captured

Global surface temperatures set a new record this week for the highest daily temperature anomalies (departure from the norm) ever observed. They were recorded by a Japanese climate database called the JRA-55 reanalysis product. These were approximately 1C warmer than the 1991-2020 baseline period used by the dataset and around 1.9C warmer than the pre-industrial (1850-1900) temperatures. “El Niño won’t peak until later this year and there is plenty more heat waiting in the wings,” Dr Michael McPhaden, a senior scientist at the National Oceanic and Atmospheric Administration, told the Washington Post, warning that we can “expect more records to be set in the coming months.”
Spotlight
IEA’s path to 1.5C unpacked
A 2023 update to the landmark 2021 Net Zero Roadmap from the International Energy Agency explores how recent developments have impacted the path to limit warming to 1.5C by the end of the century. Here, Carbon Brief summarises three key takeaways from the report.
Extraordinary growth in clean energy technology over the past two years, but more work remains
The IEA’s 2023 report finds that record growth in solar power capacity, battery production and electric car sales since 2021 are in line with their required growth in a world that reaches net-zero emissions by mid-century. Industry plans to expand manufacturing capacity are also in line with what will be required to achieve necessary growth. These two technologies alone are expected to deliver approximately a third of emissions reductions between today and 2030 in the IEA’s net-zero pathway.
The IEA finds that the world is set to invest a massive $1.8tn in clean energy in 2023. But much more work remains: investments in clean energy need to climb to $4.5tn a year by the early 2030s, while global renewable capacity needs to triple by 2030. This requires stronger policies and international support, particularly in emerging markets and developing economies. The IEA also highlights the need to speed up permitting and modernising of electricity grids to better integrate variable renewable generation.
Most of the technologies needed to limit warming to 1.5C are available today
The IEA’s statement in 2021 that technologies not yet available on the market would deliver half of future emissions reductions resulted in a lot of coverage and debate. In its new report, the IEA finds that technological development and commercialisation over the past two years mean that novel technologies are only required for 35% of future emissions reductions. This reflects significant technological development in a number of sectors, including batteries and electrolysers.
However, the IEA emphasises that more progress is needed for a number of technologies. It notes that small, modular clean technologies, such as solar and batteries, are not sufficient to deliver net-zero emissions alone. Also, new infrastructure networks, low-emissions fuels, CO2 capture technology, nuclear power and large land areas for the deployment of renewables will all be necessary.
No room for new unabated coal plants or new ‘long-lead time’ oil and gas projects
The IEA report argues that an immediate end to new approvals of unabated coal plants is required to achieve its net-zero emissions scenario – and that there is no need for new long-lead time oil and gas projects. The rapid reduction in fossil fuel demand (down 25% by 2030 and 80% by 2050) means that current oil and gas projects are sufficient to supply all expected future demand.
However, the IEA does note that some continued investment in existing oil and gas fields is not inconsistent with a net-zero emissions scenario. It argues that it will be important to properly sequence increased investments in clean energy with decreased investments in fossil-fuel supply over time to avoid potentially damaging price spikes or demand gluts.
Watch, read, listen
IDA AFTERMATH: The 19th examined how, two years after Hurricane Ida, residents are still reeling – with women of colour disproportionately affected.
CLIMATE REFUGEES: In African Arguments, South African legal scholar Dr Cristiano d’Orsi argued that laws must be reformed to allow people fleeing from climate change to claim refugee status.
NATURE’S SECRETS: BBC Radio Four’s the Life Scientific podcast spoke to the director of London’s Kew Gardens about how lessons from nature can help the world to address climate change.
Coming up
- 30 September: Maldives presidential election (second round)
- 30 September: Slovakia parliamentary elections
- 3-6 October: UNEP Fifth forum of ministers and environment authorities of Asia Pacific, Colombo, Sri Lanka
- 4-5 October: FAO Rome water dialogues
Pick of the jobs
- Climate Outreach, communications lead (maternity cover) | Salary: £38,000-41,000. Location: Oxford, UK
- US Climate Alliance, senior climate analyst | Salary: $74,000-84,000. Location: District of Columbia, US
- World Resources Institute (WRI), climate change director | Salary: Unknown. Location: São Paulo, Brazil
DeBriefed is written in rotation by Carbon Brief’s team and edited by Daisy Dunne. Please send any tips or feedback to debriefed@carbonbrief.org
The post DeBriefed 29 September 2023: Focus on carbon offsets; UK expands oil and gas; IEA’s path to 1.5C unpacked appeared first on Carbon Brief.
Climate Change
Commencement of NSW Forestry assessment a ‘chance to fix a broken system’ and deliver urgent forest protection
SYDNEY, Friday 18 September 2026 — In response to the Federal and NSW government’s announcement to commence an assessment of NSW forestry under the new national nature laws, Adele Chasson, Nature Policy Lead at Greenpeace Australia Pacific said:
“This is the Federal Government’s chance to fix a broken system that has enabled the destruction of NSW’s precious forests for far too long.
“Native forest logging continues to smash threatened species habitat. In NSW, it is pushing unique wildlife like koalas, greater gliders and glossy black cockatoos towards extinction. The state-owned logging agency has a disastrous record of environmental damage and breaches.
“The Regional Forest Agreement (RFA) system has failed, allowing the industrial logging of special forests for decades across Australia with no oversight. Thankfully, the Federal Government has started the process to finally remove the logging industry’s exemption from national nature laws.
“It’s time for the Federal Government to deliver the protection that forests urgently need, and that Australians overwhelmingly want. The Government must ensure a thorough assessment of the devastating impacts of native forest logging in NSW, and establish strong environmental rules that states must follow.
“These forests have been cared for by First Nations people for tens of thousands of years. They are some of the most biodiverse on the planet, store carbon, clean our air and water. It’s critical we protect them.”
ENDS
Media contact:
Kate O’Callaghan on 0406 231 892 or kate.ocallaghan@greenpeace.org
Climate Change
Furry Little Peach x Greenpeace
What happens when a love of marine life meets a playful imagination?
Sydney artist, illustrator and children’s author Sha’an d’Anthes, better known as Furry Little Peach, has teamed up with Greenpeace to create Happy Ocean Happy Planet: a joyful celebration of the extraordinary creatures that call our oceans home.
Sha’an felt inspired to create an illustration celebrating the beauty and resilience of marine life. Its hopeful message, A Happy Ocean is a Happy Planet, sparked a special collaboration with Greenpeace and a limited-edition t-shirt designed to help protect the oceans that inspired it.
The exclusive Furry Little Peach tee is available as a gift to new regular Greenpeace donors who give $30 or more and make at least three donations. By becoming a regular giver, you’ll help Greenpeace campaign for ocean protection.

ARTIST INTERVIEW: Sha’an d’Anthes (Furry Little Peach)
Sha’an shares the story behind the artwork, the local marine creatures featured in the design and why hope can be such a powerful force for action.
Hi Sha’an! Can you tell us a little about yourself and what you do?
My name is Sha’an d’Anthes, I also go by the pseudonym Furry Little Peach and I’m an illustrator, artist and children’s author based in Sydney, Australia. I love creating joyful, vibrant and nostalgic art that looks at the world through the lens of childlike wonder.

What do you love about drawing animals and nature?
I love all of the different shapes, colour and narrative you get to explore when drawing animals and nature. I’m also a city-slicker these days, and so I think that my work is a sort of escapism (for myself and hopefully for my audience).
How did the Greenpeace collaboration come about?
I went to the premiere of David Attenborough’s documentary Ocean, and felt compelled to create something to share the message of the film. This t-shirt is actually based off of that illustration including the tagline in I included when I shared it “A Happy Ocean is a Happy Planet”. I’m so grateful Greenpeace approached me for the project – it was a blast.
Where did you start when creating the Happy Ocean Happy Planet design?
The Happy Ocean tee starts the same as all of my work – with a brainstorm/braindump and really loose concept sketches.
How did you choose the animals for the illustration?
I actually asked Greenpeace to help me with the research of local marine life and they were so accommodating. They very quickly delivered me a huge list of local species of fish, mammals and coral and I just went through and looked up each creature and curated a little group of sea life that I thought would look sweet together – a mix of sizes, types, colours, textures and shapes.
What did you use to create the artwork?
So much of my work is traditional, but when it comes to things like t-shirts I always use digital drawing programs because I like to draw each colour in a separate layer which requires me to jump in and out of layers because it allows me to control colour and printing. When working digitally I always sketch in Procreate (an Australian digital art app), and then with this project I created final art in Adobe Fresco because it called for a vector graphic (an image that can be blown up to any size).
Do you have a favourite creature in the design?
I love painting Humpback Whales and always have, but I also have a soft spot for the sweet little Jelly Blubber jellyfish.
What did you want people to feel when they saw the artwork?
I specifically wanted to focus on the outcome that all of us want to see – a happy, thriving ocean where creatures are given the time and space to balance themselves. I feel that even when tackling tough subjects, leaning into hope is my natural inclination. As long as we have hope that things can be better, we will continue to take action.
What was the most fun part of creating it?
I actually documented the entire process of this project in a studio vlog on YouTube – and you can see how much fun I’m having doing final art jumping between layers and building the image. I had just come off completing final art for two books which are multi-year long projects, so being able to do a project that from start to finish in just a few days was really freeing at the time.
What does a “happy ocean” mean to you?
An ocean that given the time and space to repair and balance itself. Something I really took away from David Attenborough’s Ocean is that ocean ecosystems are actually really good at repairing themselves if we just let them do their thing.
How can people get their hands on the t-shirt?
The shirt is a reward for regular givers to Greenpeace – those who commit to at least 3 months of donations will receive the tee as a gift. Read about how at http://act.gp/flp-tee
How is Greenpeace helping to make our oceans happier places?
They have a deep focus on the health and happiness of our oceans through advocating for the set up of marine sanctuaries, holding big ocean polluters to account and calling for a ban on deep sea mining.
What are you working on next?
I will be jumping headfirst into Peachtober – an annual daily art challenge I run each year in October, if there are any artists reading this it’s a great time so please come join! In terms of publications my next picture book The Late Bird will be out in February 2027 (published by Harper Collins US) and then I have an creative activity book for adults coming out next August with Chronicle US and Penguin Australia. Otherwise you can always check out what I’m tinkering away with in my studio on Instagram and YouTube.

Climate Change
AI giant Anthropic’s first Australian data centre deal an “egregious” example of Big Tech double talk
SYDNEY, Thursday 17 September 2026 — Greenpeace Australia Pacific has slammed AI giant Anthropic’s deal for its first Australian site in Queensland’s Western Downs, the heart of coal seam gas country, saying the project will entrench gas and turbocharge climate pollution.
The expected electricity demand from the data centre site, situated in the middle of the Western Downs coal seam gas fields, is comparable to 1.5 million Australian households. Greenpeace’s report Energy Vampires: The AI data centres draining Australia called for a moratorium on frenzied data centre development until appropriate guardrails are in place.
Joe Rafalowicz, Head of Climate and Energy at Greenpeace Australia Pacific, said: “This is an egregious example of Big Tech giants being given carte blanche to drain energy and water, and use polluting gas to fuel their hyperscale data centres.
“AI and Big Tech corporations claim to bring new renewable energy to the grid, while blatantly planning to power their operations with polluting fossil fuels.
“Planning documents show the first stage of this behemoth project could be powered by ‘behind the metre’ gas — the same playbook AI companies have used in the US, leading to a 20% increase in climate pollution from electricity. Now these companies want to bring their cowboy plans to Australia and the Federal Government is allowing it.
“If they plugged into the local grid, the power required would increase Queensland’s electricity grid emissions by around 6.6 million tonnes — an 18% rise. If they build their own gas-fired power plants, this will drive up Queensland’s emissions even more.
“Billions of dollars are now pouring into a massive pipeline of proposed new data centres, of unprecedented size, being built at incredible speed across the country. Australians should be worried about the extreme lack of scrutiny being applied to these projects, and the corporations leading the data centre charge.
“The data centre build-out is happening without the endorsement of the Australian people, yet we are the ones who will pay the price. We can not allow unchecked data centre expansion to derail our renewable energy transition, entrench gas and turbocharge climate pollution — that’s why Greenpeace has called for an urgent moratorium until appropriate guardrails are in place.”
ENDS
Media contact: Kate O’Callaghan on 0406 231 892 or kate.ocallaghan@greenpeace.org
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