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Monitoring stations in the Arctic detect record levels of carbon dioxide, higher than ever above 'safe' 350ppm mark The world's air has reached what scientists call a troubling new milestone for carbon dioxide, the main global warming pollutant. Monitoring stations across the Arctic this spring are measuring more than 400 parts per million of the heat-trapping gas in the atmosphere.

Research shows that UK carbon emissions - a significant part of greenhouse gases - have fallen significantly. But how much further do they need to fall to meet future targets?

Scientists have identified thousands of sites in the Arctic where methane that has been stored for many millennia is bubbling into the atmosphere. The methane has been trapped by ice, but is able to escape as the ice melts. Writing in the journal Nature Geoscience, the researchers say this ancient gas could have a significant impact on climate change.

Melting Arctic permafrost could put even more methane - a potent greenhouse gas - into the atmosphere than previously thought, with worrying implications for the pace of global warming. Many ice sheets that sit like caps over rock crevices trap natural seeps of methane; when they melt, the gas can quickly be released into the atmosphere in "burps".

Controversial 'fracking' technique to extract gas from the ground was the 'highly probable' cause of earth tremors, report finds A controversial "fracking" technique to extract gas from the ground was the "highly probable" cause of earth tremors which hit Lancashire's Fylde coast earlier this year, a report concluded today.

The levels of greenhouse gases are higher than the worst case scenario outlined by climate experts just four years ago

Nasa researchers measured surprising levels of the potent greenhouse gas methane coming from cracks in Arctic sea ice and areas of partial sea ice cover

What is carbon capture and storage? The technology is designed to prevent the carbon dioxide exhaust from the burning of coal and gas from entering the atmosphere and driving further climate change. It does this by either stripping the CO2 from the smokestacks of conventional power stations, or by burning the fuel in special ways to produce exhausts of pure CO2.

Nearly half of the UK's top companies do not have targets on greenhouse gas emissions, despite years of legislation and campaigning on the issue, a study by the Carbon Trust has found.

UK climate secretary to tell defence experts that conflict caused by climate change risks reversing the progress of civilisation Climate change will lead to an increased threat of wars, violence and military action against the UK, and risks reversing the progress of civilisation, the energy and climate secretary Chris Huhne will say on Thursday, in his strongest warning yet that the lack of progress on greenhouse gas emission cuts would damage the UK's national interests.