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Protesters have been using canoes and dinghies to obstruct deep sea mining exploration vessel between Mexico and Hawaii

Deep sea miners have turned water hoses on Greenpeace activists attempting to block their prospecting in the Pacific Ocean, according to footage released by the NGO.

For the past week, an international team of Greenpeace activists have been using canoes and dinghies to obstruct the Coco, a deep sea mining exploration vessel, as it collects data to file for a mining permit for waters between Mexico and Hawaii.

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Leaders from 120 countries have pledged to triple renewable energy capacity to at least 11,000 GW globally, signing up to a Global Renewables and Energy Efficiency Pledge at the UN climate summit in Dubai on Saturday.

Carbon removal technologies such as direct air capture are essential to limiting global warming to 1.5C, said panelists at a number of COP28 side events, but require increased investment and support as they face distinct hurdles to increase capacity.

The US is pledging a further $3 billion to the UN’s Green Climate Fund (GCF), Vice President Kamala Harris announced at the COP28 climate summit in Dubai on Saturday.

Brazil launched at COP28 on Friday its proposal for a global instrument dubbed the “Tropical Forest Forever Facility” aimed at mobilising $250 billion to protect standing tropical forests in up to 80 countries, with the UK also committing £35 million to protect the Amazon in the country.

A group of international agencies, funded by a $40 million commitment from a philanthropic organisation, announced a global initiative on the sidelines of COP28 on Saturday to help track and drive methane emissions reductions from the oil and gas industry.

Regulations would cut equivalent of 1.5bn metric tonnes of carbon dioxide by 2038, head of EPA says at Cop28

• Cop28 live – latest updates

The United States has announced a major crackdown on methane emissions as part of a new effort by several countries at the Cop28 summit to curb the “super pollutant” that is responsible for turbocharging the climate crisis.

The US has used the climate conference, which is administered by the UN and being held in Dubai, to unveil new regulations it estimates will cut methane emissions from its vast oil and gas industry by 80% from levels that would be expected without the rule, a total of 58m tonnes by 2038.

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Brazilian president’s plans to approve new fossil fuel projects sit awkwardly with pledge to meet 1.5C target

The Brazilian president, Luiz Inácio Lula da Silva, has roared into Cop28 with a mega-delegation of more than 2,000 people and grand ambitions to address inequality and protect the world’s tropical forests.

Lula, as he is known, said his country was leading by example: “We have adjusted our climate goals, which are now more ambitious than those of many developed countries. We have drastically reduced deforestation in the Amazon and will bring it to zero by 2030,” he said.

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Colombian president Gustavo Petro wants treaty to lay out plan to end era of coal, oil and gas

• Cop28 live – latest updates

Colombia has formally joined an alliance of nations calling for a fossil fuel non-proliferation treaty to prevent the “omnicide of planet Earth”, the country’s president announced at Cop28.

At the climate summit in Dubai, Gustavo Petro has said his country would join a group of nations calling for a new body to manage a global transition away from the primary driver of global heating, akin to previous treaties to reduce nuclear weapon arsenals and landmines.

Cop28: Can fossil fuel companies transition to clean energy?
On Tuesday 5 December, 8pm-9.15pm GMT, join Damian Carrington, Christiana Figueres, Tessa Khan and Mike Coffin for a livestreamed discussion on whether fossil fuel companies can transition to clean energy. Book tickets here or at theguardian.live

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A voluntary carbon credit ratings agency has partnered with an Asian government to help it use "high-quality" carbon credits towards meeting Paris Agreement goals, they said at a joint launch event on Saturday.

Fatih Birol says fossil fuel use will peak in 2030, and urges companies to lead switch to green energy

• Cop28 live – latest updates

Oil and gas producers must convert their operations to renewable energy or face steep economic decline, the world’s chief energy adviser has said amid the forging of a new alliance of energy companies at the UN Cop28 climate summit.

Fatih Birol, executive director of the International Energy Agency, said: “We have to find a way to reduce fossil fuel consumption, and as such there is an important role that the oil and gas industry can play. I very much hope that they can show in Dubai that they can be part of the solution when it comes to tackling climate change.”

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The US has finalised standards to reduce methane pollution and other harmful air pollutants from the oil and gas industry, Environmental Protection Agency (EPA) administrator Michael Regan announced at COP28 in Dubai on Saturday.

Crediting standard Cercarbono has released for public consultation a broad programme that will allow a wide range of activities to earn voluntary biodiversity credits, covering terrestrial, marine, freshwater, wetland, and urban activities.

World’s militaries produce at least 5.5% of emissions, as evidence mounts that climate crisis puts regions at greater risk of war

Wealthy nations should divert 5% of their military budgets to climate finance, advocates argue.

The call comes as global leaders at Cop28 in Dubai gather for a special-themed day on “relief, recovery, and peace” on Sunday, marking the first time climate-fueled conflict has ever been on an international climate conference agenda.

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Coal exporter Colombia has joined a small group of countries seeking a treaty to end new fossil fuel development and phase out existing capacity in line with the Paris Agreement, President Gustavo Petro announced Saturday at COP28.

A South Korea-led intergovernmental organisation has secured a forest carbon project in Kyrgyzstan, where it plans to restore 600,000 hectares and contribute to achieving the Central Asian country's climate goals.

It's Day 3 of COP28 and world leaders are speaking once again at Expo City in Dubai, UAE, with climate finance pledges mounting, and coal phaseout and renewables targets on the agenda. In our daily running blog, Carbon Pulse will report relevant or useful updates throughout the day. Timestamps are in local time (Gulf Standard Time, GMT+4).

French President Emmanuel Macron and billionaire media mogul Michael Bloomberg announced a framework to set up the world's first global and open emissions data source for private sector emissions at COP28 in Dubai on Saturday, with 400 companies so far signed up at its launch.

Seven new countries, including the US, signed up to a pledge on Saturday to phase out existing unabated coal plants and to not develop new unabated capacity, in what has been described as a "groundbreaking" move at COP28, while a French-led initiative supported by the EU also launched, aiming to end private finance for the fuel.

Public-private forest finance partnership the LEAF Coalition has unveiled its first finalised Emissions Reductions Purchase Agreements (ERPAs) to supply jurisdictional REDD+ credits from two nations to corporate buyers, organisers announced on Saturday at COP28.