Permafrost is much more sensitive to warmer temperatures than previously known, writes Alex Kirby. A new study shows that every 1C of warming could melt 4 million sq.km of frozen soil, releasing huge amounts of methane and carbon dioxide to add to the warming. It's time to start meeting those Paris targets!
An influential organisation of American Muslims announced at COP22 in Marrakesh that it will end investment in fossil fuels, and urged its partners to follow suit, writes Alex Kirby. The move adds to pressure on sovereign wealth and pension funds worth $19 trillion to follow suit to meet Paris Agreement targets.
Global CO2 concentrations have reached a historic new base of 400 parts per million, writes Alex Kirby, and are unlikely to fall below that level - 40% higher than the pre-industrial era - for many centuries to come. The WMO released the news just as the UK commits to a new London runway.
A new energy market analysis shows the average cost of electricity from renewables is already lower than from fossil fuels, writes Alex Kirby. And as renewables eat deeper into the 'market share' of coal and gas power plants, so the entire economics of fossil fuel power generation will unravel.
A new UN report warns of a threefold increase in extraction of the Earth's primary materials between 1970 and 2010, writes Alex Kirby. The boom in the production of minerals, ores, fossil fuels, timber and biomass and will be to intensify climate change, increase air pollution and reduce biodiversity.
For the second year running CO2 emissions flatlined even as the global economy was growing at around 3%, writes Alex Kirby. But sharply rising temperatures show the need for further massive renewable energy deployment to actually bring emissions down.
The last 30 years of European summers have been the hottest in thousands of years, writes Alex Kirby, and we had better start getting used to it - most of all in the Mediterranean and the Arctic, where a 1.5C global temperature rise could be amplified to 3.4C and 6C respectively.
A climate negotiators gather in Paris for COP21, the WMO say that a combination of human and natural causes will make 2015 temperatures the hottest ever - half way to the 2C 'safety threshold'. But despite the ever falling price of solar and wind, many newly industrialising countries are insisting on coal-fired development.
A new report warns that coal, oil and gas assets will be stranded if the world is to limit temperature rise to 2C. Losses are projected to reach $2.2 trillion over the next decade, with coal taking the biggest hit, while oil demand peaks in 2020. Yet fossil energy companies are ignoring the very innovations that will put them out of business.
Evidence stretching back 40,000 years shows that global warming will increase drying in a region of East Africa where drought already causes humanitarian crises, writes Alex Kirby - dashing earlier hopes of increased rainfall.
Ecotricity boss Dale Vince has accused the government of rigging the electricity market, writes Alex Kirby, by showering fossil fuels and nuclear power with huge subsidies, while taxing renewables and insisting they must 'stand on their own two feet'.
Promises made by governments to cut their greenhouse emissions come nowhere near stopping global warming rising above the 2C danger level, writes Alex Kirby. And in many cases the laws and policies needed to deliver them are absent.
An new design of tidal power turbines will generate power at a third the price of current technologies, write Alex Kirby & Oliver Tickell, even at a lower price than offshore wind - without endangering marine life.
Glaciers around the world are melting on a scale without precedent in recorded history, writes Alex Kirby. Measurements of over 5,000 glaciers show that they have been retreating so fast so far this century that even if climate is stablised, the ice losses will continue for years to come.
The secretary general of the OECD group of the world's 34 richest nations has issued a dramatic plea to its members to act now to end 'unabated coal' burning, writes Alex Kirby, and invest in renewables around the world to prevent climate disaster.
The world economy and energy use both grew in 2014 - but carbon emissions did not, writes Alex Kirby. The reason? The worldwide surge in renewables, especially in China, has reduced demand for coal in power generation.
In a landmark ruling, judges have ordered the Netherlands to do more to tackle the 'imminent danger' of climate change. Meanwhile an expert commission reports of an impending global health breakdown from unmitigated global warming.
Thirty new heat tolerant varieties of bean - a staple food crop around the world's tropical regions - will help people survive in a world as much as 4C warmer that it is now, writes Alex Kirby - and look: no genetic modification!
Rising temperatures will result in more snow falling in Antarctica, and the build-up of ice will reduce sea level rise from other sources. But as the extra weight of ice makes Antarctica's glaciers flow faster, the continent will still be a net contributor to sea level rise.
For the world to meet its climate goals, a third of the world's oil, half its gas and 80% of its coal must stay underground, writes Alex Kirby. And it's not us saying it - but scientists writing in the journal Nature.
Rising temperatures in the Arctic are reaching further south to the lakes and forests of Finland, writes Alex Kirby. But the warming is not affecting summer temperatures - it's concentrated into the colder months, causing a shorter, less severe winter.
In a familiar ritual, the COP20 climate talks have been extended for an extra day as delegates struggle to reach some kind of agreement. The good news is that worthwhile emissions reductions may be achieved - but poor countries are asking: where's the money?