The great Atlantic ocean circulation that – among otherplanetary roles – helps to drive the Gulf Stream is experiencing aslowdown, according to a new study out in Nature Climate Change.The consequences could be “dire” – including significant extra sealevel rise for coastal cities like New York. An avalanche of coldwater from the melting Greenland ice sheet appears to be slowingthe ocean circulation to levels not experienced in more than 1,000years, writes Climate Central. The gulf stream helpsto stop Britain from freezing over in winter, although Britain isstill likely to become warmer providing the Gulf Stream does notcome to a complete stop, reports The Independent.

Dozens of climate scientists and environmental groups arecalling for museums of science and natural history to “cut allties” with fossil fuel companies and philanthropists like the Kochbrothers, in a letterreleased on Tuesday. TheSmithsonian “risks damaging its reputation” as it stands by a”wildy misleading” climate change exhibit funded by the KochBrothers, says Think Progress. Mr Koch and his familyhave funded conservative causes, including scientists andorganisations that contest the role of humans in climatechange. Inside Climate Newsalso has thestory.

A future Conservative government could jeopardise the UK’snegotiating position at crucial climate change talks later thisyear if it is simultaneously trying to renegotiate Britain’sposition within the EU and push through a referendum bill. That isthe warning of the Energy and Climate Change Secretary Ed Davey, inan interview with BusinessGreen. A new coalition government mustprioritise a global deal on climate, the Liberal Democrat ministerwarned.

India will not be rushed into delivering its contribution toa proposed 2015 global climate change pact, its environmentminister has told the Times of India. Prakash Javadekar said hewanted to see what further climate policies developed countrieswere proposing before making any commitments, but said that Indiawill play its part in Paris.

The UK’s insurance industry will today join with greengroups and academics to call on world leaders to sign an ambitiousglobal deal on tackling climate change in Paris later this year. Anopen letter, signed by a number of insurance industry leaders,warns countries not to repeat the mistakes made at Copenhagen in2009. The letter comes as Ed Davey says an agreement that limitsglobal warming to 2ºC by the end of the century is far fromcertain.

In a major report on the impact of global warming on food,scientists have concluded that the quality of many meats andvegetables is due to decline at temperatures increase, theMailOnline reports. Researchers from the University of Melbournewarned of decreasing milk yields, smaller onion and beetroot crops,and tougher meat, as heatwaves become more common. Vegetables likecarrots are also likely to become less flavoursome and have a lesspleasant texture.

Deals for North Sea oilfields – which have been held back bythe plummeting price of Brent crude – could soon come back onstream with the help of a new tax cut, reports the Financial Times.Last week’s UK Budget measure to reduce the rate of “supplementary”tax on North Sea profits has been well received and coincides witha number of assets being put on the block – most notably a 20 percent stake in Total’s Laggan Tormore deepwater gas project west ofthe Shetlands.

The Guardian’s Leave It In the Ground campaign names andshames the Wellcome Trust and the Gates Foundation for notdivesting their holdings in fossil fuel companies. The tacticsharken back to the anti-apartheid boycotts of the 1960s-80s, writesDevinney, yet “none of the arguments for fossil fuel divestmentappear to understand the nature and importance of ownership inmodern shareholder societies”. Those behind divestment campaignshave “lost sight of the fact that investment can imply control”.

At least 10 European power plants were supposed to beginpiping their carbon emissions underground this year – but none hasdone so. Arthur Nelsen discusses how, in the face of desperateglobal warming projections, the carbon capture and storage dreamstill “unites Canadian tar sands rollers with the UN’sIntergovernmental Panel on Climate Change”, and “Shell with someenvironmentalists”.

The circulation pattern in the Atlantic Ocean that bringswarm water to the UK is slowing, a new study shows. Scientists usedlong-term sea surface and atmospheric temperature data to show thecirculation has weakened, particularly since 1970, cooling theNorth Atlantic while the rest of the world heats up. The gradualbut accelerating melting of the Greenland ice sheet is a possiblemajor contributor to the slowdown, the researchers say.

Wetlands are unique ecosystems because they tend to be sinksfor carbon dioxide and sources of methane. A new study shows thatin natural wetlands, emissions of methane are generally offset byabsorbing carbon dioxide. But converting wetlands into managedland, such as for crops, upsets this balance and causes wetlands tobe a contributor to climate change.