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Karl Mathiesen

Karl Mathiesen is Climate Home News' editor. He has written for national newspapers, newswires and magazines in Australia and the UK. Before joining Climate Home News in 2016, he worked mostly with the Guardian’s environment desk. He is based in London.
Karl Mathiesen
Labour scrambles to develop a British Green New Deal

Labour scrambles to develop a British Green New Deal

Jeremy Corbyn meets AOC advisor to discuss US green stimulus package, while inside Labour, two camps are forming different proposals for a UK version

Climate Weekly: Neutralité 2050

Climate Weekly: Neutralité 2050

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France introduces 2050 carbon-neutral law

France introduces 2050 carbon-neutral law

New bill loosens restrictions on nuclear to bring France’s emissions down, concerning some campaigners

UN security council members mount new push to address climate threat

UN security council members mount new push to address climate threat

UK, France lead push to set up UN “clearing house” to identify climate-stressed regions at risk of collapsing into conflict

Coal phase-out will increase German need for gas, says Merkel

Coal phase-out will increase German need for gas, says Merkel

Under pressure to block a gas pipeline from Russia and end coal power, the chancellor tied their fates together

Countries breathe life into the Paris climate agreement

Countries breathe life into the Paris climate agreement

At a summit in Katowice, Poland, nearly 200 governments agreed rules to put the historic pact into action, but failed to make strong push for faster emissions cuts

As it happened: Final scramble for deal at climate talks in Poland

As it happened: Final scramble for deal at climate talks in Poland

Reaction, news and analysis from the CHN team on the ground in Poland as negotiators reach the end of two weeks of talks

Saudi version of climate justice rejected by developing countries

Saudi version of climate justice rejected by developing countries

Oil-rich country’s resistance to welcoming findings of science report on 1.5C warming has marked it out from poorer countries

The US, still in the Paris Agreement, is trying to decide its future

The US, still in the Paris Agreement, is trying to decide its future

As the White House hosts an event on fossil fuels, the state department is in Poland to make a deal that will shape the global accord

Climate science on 1.5C erased at UN talks as US and Saudis step in

Climate science on 1.5C erased at UN talks as US and Saudis step in

In a moment of drama in Poland, countries closed ranks against a push by oil producers to water down recognition of the UN’s report on the impacts of 1.5C warming

French senate 'failed to heed' UN science warning before protests

French senate ‘failed to heed’ UN science warning before protests

A major climate report in October found shifting to a green economy risked social disruption, but French senators told a scientist they were ‘powerless’ to respond

Global alignment of climate plans pushed to 2041 in UN draft

Global alignment of climate plans pushed to 2041 in UN draft

Late start date for synchronising national climate plans shows complacency and risks dampening ambition, warn observers

Katowice Brief: The first test

Katowice Brief: The first test

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Katowice brief: The other US climate team

Katowice brief: The other US climate team

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Paris Agreement fight could push US out permanently, warn top Obama officials

Paris Agreement fight could push US out permanently, warn top Obama officials

A deal in Poland that draws a hard line between developed and developing countries may be unacceptable to future administrations – Democratic or Republican

Know your NDCs from your LMDCs: A climate diplomacy glossary

Know your NDCs from your LMDCs: A climate diplomacy glossary

Learn the lingo of international climate talks with our handy reference guide

Draft G20 statement waters down Paris climate commitment

Draft G20 statement waters down Paris climate commitment

Argentinian official says ambiguity over the Paris Agreement is needed to avoid a split with the US, days before critical UN climate talks begin

Bolsonaro names climate denier as Brazil's foreign minister

Bolsonaro names climate denier as Brazil’s foreign minister

Ernesto Araújo, a relatively junior diplomat, accuses the left of using the environmental cause ‘to serve their political project of total domination’

Climate Weekly: Will China come clean on CFCs?

Climate Weekly: Will China come clean on CFCs?

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Colorado governor-elect has US’ most ambitious renewable goal

Colorado governor-elect has US’ most ambitious renewable goal

Jared Polis’ promise to phase out fossil fuel electricity by 2040 would be the fastest target in any state, as the midterms returned mixed results on climate policy

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