Since 1995, when the first Cop was held, carbon levels have increased from 360.67 parts per million to 426.68 parts now

In 1995, when the first “conference of the parties” (Cop) of the UN’s climate change convention met in Berlin, the atmospheric carbon dioxide concentration was approximately 360.67 parts per million. The then German chancellor, Helmut Kohl, gave a passionate speech about how greenhouse gases must be reduced to save the planet from overheating. There was a relatively unknown East German woman, the environment minister, Angela Merkel, chairing the conference. She was red hot at keeping order. The UK journalists concluded she would have a bright future.

Immediately after the conference I was commissioned to write a book about climate change called Global Warming: Can Civilization Survive? It sold well and was the first of several.

Exclusive: Summit leadership releases new text despite 29 nations threatening to block progress without commitment

A new draft text on the outcome of the Cop30 climate talks has been published that contains no mention of a phase-out of fossil fuels, despite countries supporting such action having threatened to block any agreement without it.

The Guardian revealed on Thursday night that at least 29 nations supporting a phase-out of fossil fuels at the climate summit had sent a letter to the Brazilian Cop presidency threatening to block any agreement that did not include such a commitment, in a significant escalation of tensions at the crunch talks. The leaked letter demanded that the roadmap be included in the outcome of the talks, which are due to end on Friday but are likely to continue into the weekend.

It’s a climate-vulnerable nation, while also being the world’s sixth-largest greenhouse-gas emitter. Global investment in climate action is vital

While the outcome is a let down for those who want Australia to do better on climate, Chris Bowen looks set to play a pivotal role in the UN talks

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Ouch. From one perspective, Australia’s long-running bid to host the Cop31 UN climate conference next year has ended in clear failure.

It campaigned for more than three years for the right to put on the world’s biggest climate summit and green trade fair, which would have brought tens of thousands of people to the South Australian capital of Adelaide next November.

Exclusive: André Corrêa do Lago says rise of clean energy must be acknowledged and rich countries need to do more

• Cop30: click here for full Guardian coverage of climate talks in Brazil

Oil-producing countries need to acknowledge the rise of clean energy, and rich countries will have to provide more assurances on finance if the chasm between negotiating nations at Cop30 is to be bridged, the president of the summit has said.

André Corrêa do Lago, the veteran Brazilian climate diplomat in charge of the talks, said: “Developing countries are looking at developed countries as countries that could be much more generous in supporting them to be more sustainable. They could offer more finance, and technology.”

The Neoliner Origin set off on its inaugural two-week voyage from France to the US with the aim of revolutionising the notoriously dirty shipping industry

It is 8pm on a Saturday evening and eight of us are sitting at a table onboard a ship, holding on to our plates of spaghetti carbonara as our chairs slide back and forth. Michel Péry, the dinner’s host, downplays the weather as a “tempête de journalistes” – something sailors would not categorise as a storm, but which drama-seeking journalists might refer to as such to entertain their readers.

But after a white-knuckle night in our cabins with winds reaching 74mph or force 12 – officially a hurricane – Péry has to admit it was not just a “journalists’ storm”, but the real deal.