The emergence in the Paris Agreement of 1.5C as the global temperature rise the world should aim for is hugely significant, writes Natalie Bennett. But it's up to us, climate activists and ordinary citizens the world over, to make sure it's delivered.
How to reconcile the Paris Agreement's target to deliver a temperature rise 'well under 2C', with its wholly inadequate mechanisms? Easy, writes Myles Allen: Make fossil fuel producers 'take back' their carbon so as to fit within a global carbon budget. And for fossil fuel producers in the rich world, that means there is no time to lose - specially to meet a 1.5C target.
The Paris climate agreement contains plenty enough to get fossil fuel companies and exporters worried about their future, writes Kumi Naidoo. But it is lacking is in the mechanisms to deliver its aspirations. That's why the global climate movement has to escalate its fight against the carbon bullies, and for climate justice.
What's not to like about the promise of billions of dollars for clean energy R&D? It's that we need to get the global energy transition moving right now, writes Ambuj D Sagar, not ten years hence. The billions should go into the immediate global deployment of the renewable technologies we have already got.
As COP21 negotiators settle down for the night in their final attempt to thrash out a climate agreement, the official message is that a deal will be reached by morning, writes Pavlos Georgiadis. But key aims have been abandoned, big issues are far from resolution, and the latest text falls way short on ambition, finance and compensation for climate-related loss and damage.
Campaigners at COP21 in Paris are calling for a new 'upstream' carbon tax to be levied on fossil fuel producers, writes Henner Weithoener, and so send a clear market signal and finance poor countries' compensation for 'loss and damage' caused by climate change.
Coal prices are in terminal decline, writes Kyla Mandel, oil giant Statoil is calling for the strongest possible agreement, and the world's energy bosses are planning for a decarbonised future. COP21 is marking the definitive tipping point in the demise of fossil fuels.
No matter what bullying tactics they encounter in the final stages of COP21, writes Laurence Delina, 'climate vulnerable' countries must hold firm - and demand a legally binding treaty that delivers deep emissions cuts and secure, sufficient climate finance, all backed by strong sanctions for non-compliance. Nothing less will do.
Who's the UK's foremost politician setting the agenda on climate change issues? Green MP Caroline Lucas, of course. Nick Breeze caught up with her at a COP21 event at the French National Assembly in Paris. The fossil fuel industry is in its last throes, she told him - but it's fighting back hard, and politicians are giving out very mixed messages: saying one thing, while doing another.
As COP21 reaches its endgame, there are plans to build 2,440 coal-fired power plants around the world, write Mowdud Rahman & Greig Aitken. Their completion would send global temperatures, and sea levels, soaring. Yet Bangladesh, the world's most 'climate vulnerable' large country, has plans for a 1.3GW coal power plant on the fringes of its World Heritage coastal wetlands.
As Arctic Peoples at COP21 in Paris appeal for unity to halt global warming, writes Tim Radford, scientists report that Greenland's glaciers are now melting at a speed not seen since the last Ice Age almost 10,000 years ago.
ITER, the elusive and multi-million dollar fusion fantasy, was yet another nuclear chimera introduced at the Paris COP21 climate talks as a 'solution' to our climate crisis, writes Linda Pentz Gunter. But the idea is pure fantasy: long before it can be made to work, if it ever can, it will have been made obsolete by harnessing the power of our giant fusion reactor in the sky: the Sun.
In this joint statement to COP21 Amnesty International and Greenpeace International call on all governments to protect human rights by including making respect for human rights an explicit purpose of any agreement, while agreeing to phase out fossil fuels and deliver 100% renewables for all by 2050.
Civil society may have been kept out of the COP21 conference centre, even forbidden to march on the streets, writes Thomas Dekeyser. But climate activists have found an new means of expression: the 'Brandalism' of 600 advertisements in bus shelters across Paris, replacing corporate brand-building with subversive messages on climate and consumerism.
A new movement has been launched at COP21 in Paris to give legal effect to the rights of nature and communities, writes Hal Rhoades, providing effective protection against the gross environmental damage and human rights violations that accompany extractive industries from mining to oil development and agri-business projects, and which underlie climate change.
Levels of CO2 are at their the highest in 800,000 years, writes Tim Radford, but news of a probable decline in emissions this year is providing welcome cheer at the COP21 climate summit: thanks to renewables, economic growth and falling emissions can go hand in hand.
Britain's five top media billionaires are all 'climate sceptic and using their newpapers to disinform us on climate change and block effective action, writes Donnachadh McCarthy. So let's put together a block of climate-aware advertisers to demand they tell the truth.
Saturday's delivery of the draft Paris Agreement text for ministers to run with today was a small miracle, writes Luke Kemp. But it came at the cost of 935 bracketed texts to be argued over by ministers this week, while key questions - whether it will be a legally binding treaty, and how poorer countries will be paid to adapt to and mitigate climate change - are still up for grabs.
Last week a new billionaires club strode into COP21 in Paris promising big money for 'clean energy': the Breakthrough Energy Coalition. But most of its members are nuclear obsessives, writes Linda Pentz Gunter, from Bill Gates to Jeff Bezos and Richard Branson. And what the the world needs is not 'patient investment' into nuclear research, but impatient investment into renewables deployment.
Monsanto was accused of 'crimes against humanity and the environment' at COP21 in Paris this week, writes Pavlos Georgiadis. And now the evidence against it is being gathered for presentation at a 'Monsanto Tribunal' taking place next October in The Hague.
The latest text of the Paris Agreement on climate change published today sets 1.5C as its 'long term temperature goal', half a degree lower than previously agreed. It's a big victory for poor 'climate vulnerable' countries - and a blow for Saudi Arabia.
Climate change denier Lord Monckton was making waves at COP21 in Paris yesterday, write Brendan Montague & Kyla Mandel, with his claims of a 'synergy of interests' between 'malevolent scientists' and power-mad politicians intent on setting up a fascist / communist world government under the guise of a climate treaty.
'Pay up or there's no deal', a coalition of 134 developing nations have warned the rich industrial countries at COP21 in Paris - the ones that caused the climate problem in the first place. As Paul Brown writes, much more than the $64 billion so far pledged will be needed to get them on board.
COP21 is overwhelming, writes Kevin Smith at the end of the Summit's first week. It's huge, its complicated, everyone is running around in a constant frenzy, NGOs are squeezed out of key meetings, and all but the biggest countries struggle to keep up with the action. But still, negotiations are progressing. And amid the chaos, some truly wonderful, surprising, inspiring things are happening.