A two-week UN summit in Paris has agreed the first climate deal to commit all countries to cut emissions
The international agreement was gavelled through by French Foreign Minister Laurent Fabius to claps and cheers
More than 190 countries had been working on the pact for four years after earlier attempts to reach such a deal failed
Negotiations ran into the small hours for three consecutive nights in order to hammer out the final draft
Matthew asks a climatologist from Arlington what climate change means for the area.
Quote MessageWe will experience in the future probably three months of temperatures over 38C, whereas currently we only experience one month.
Dr Arne Winguth, Climatologist, University of Texas, Arlington
Click on the 'Live Coverage' tab above to watch the BBC's Matthew Price answer your questions on how climate change is affecting this oil-rich but recently drought-stricken state.
Matt McGrath spoke to Outside Source on the BBC World Service earlier today.
The arguing has only just started at the UN Climate Summit in Paris
Quote MessageAt the moment it's around 50 pages; it was 50 pages when we came in here. So we're not quite sure what they've been doing all week. But it's a very complex, dense, legal document at the moment and they're trying to sort it out... People are watching the detail very, very closely at the moment.
Matt McGrath, BBC environment correspondent
At 17:00 GMT our correspondent Matthew Price will answer a selection of your climate change questions.
He will be appearing direct from Texas, US, in a live video which will stream right here on this page.
Tommy Henderson is a farmer near Wichita Falls in the state's north, whose livelihood is hugely affected by variations in the climate
Send your questions for Matthew in the following ways:
While you're waiting, watch the highlights of Matthew's live Q&A from Vanuatu, on Tuesday evening. Click on 'Key Video' above.
It's not just the attention of the world's media that is trained on Paris.
BBC science correspondent Jonathan Amos earlier pointed out that Sentinel-2a, a new Earth-observation satellite, has also been taking a peek:
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Read more here, in Jonathan's news story: EU's Sentinel colour Earth camera now operational, external
BBC science editor David Shukman tweets about today's new draft of the Paris agreement:
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Kamal Ahmed
Business editor
Ahead of the key business summit at COP21 in Paris, Unilever chief executive Paul Polman says the UK government needs to be "more progressive" in its support for renewables.
It has been a controversy that has rumbled on for months.
The government has said it wants to cut subsidies to solar and wind power generation, saying it is "on track" to exceed its 2013/14 renewable energy target of 5.4% of all annual energy provision.
The solar power industry is not exactly delighted.
Jobs have been lost as companies have scrambled to cut costs and the sector has complained that the government is sending an inconsistent message on its support.
It appears they have found something of an ally in Mr Polman.
Unilever is a consumer goods giant (and maker of everything from Marmite to Domestos) that many agree has taken a leading position in the carbon reduction debate.
Business leaders arrive in Paris this weekend to join the United Nations climate change conference.
As is usual at COP events, civil society groups are going to great lengths to create publicity stunts around particular ideas.
Today, campaigners from Avaaz dressed in baby clothes and bibs to urge negotiators to reach a "grown up" agreement.
Protester Emma Ruby Sachs said, "The building blocks are all there. This is simple, we need 100% clean, long-term goal... The leaders have the chance to be adults and deliver this right now.''
Image source, AvaazBig babies
Also at a recent briefing, Mr Stern misheard a name when taking a question from journalist George Joyce.
"Did you say your name was James Joyce?" he asked.
"That's a helluva name..."
As the other Joyce once wrote, mistakes are the portals of discovery.
Image source, APMr Stern at another climate meeting in November
Matt McGrath
Environment correspondent, BBC News, Paris
At a press briefing earlier today, US lead negotiator Todd Stern praised the relationship with India, which his boss John Kerry had recently said would be a "challenge" at COP21.
He was asked if relations had improved and if "a little more kumbaya was now being sung".
"I'm a kumbaya kinda guy..." he replied.
Quote MessageThe most striking meeting was the president's talk with Prime Minister Modi; it was an extraordinarily rich exchange. The two leaders have a tremendous rapport, the president wanted to talk substance and did, and Prime Minister Modi was ready to do the same. It was a very good conversation.
Todd Stern, US lead negotiator
In Paris for the mayors' summit, Boris Johnson visited a plant on the Seine which is using river water to cool apartments.
There, he met BBC environment analyst Roger Harrabin. Mr Johnson was clearly impressed by the facility:
Quote MessageIt's the kind of thing that we should have in London already, on a great scale.
Roger Harrabin meets Boris Johnson at the cooling facility
Quote MessageNotwithstanding my embarrasment about a rare moment of being upstaged by Paris, we are going to be following suit with a plant in Greenwich.
Boris Johnson, Mayor of London
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Matt McGrath
Environment correspondent, BBC News, Paris
Some small indications of progress here at COP21 - at least when it comes to the size of the text. Negotiators produced two new versions of the draft agreement which were published this morning.
The first is a compilation of everything that has been discussed so far and now runs to 46 pages, a slight thinning out. The other document, prepared by the facilitators, runs to a mere 38.
This includes what are being called “bridging proposals” – tentative attempts at compromise proposed by the chairs. The parties are set to look at these this afternoon and give their verdict.
The whole point is that by noon tomorrow they must hand to the French presidency their best effort: a document that can go to ministers next week to make the political decisions.
As French Foreign Minister and COP president Laurent Fabius said, with a good deal of understatement, “We are not there yet.”
Some text edits are agreed live on screen at the conference
Roger Harrabin
BBC environment analyst
City mayors from 40 large cities are meeting this afternoon in Paris to swap notes on what they can do to combat climate change.
They say they can act much more quickly than national governments, by focusing on practical solutions.
Read more in Roger's news story by clicking here.
The mayors gathered at Paris City Hall
Image source, AFPThe world's largest solar boat is currently moored on the Seine
Welcome back to the BBC's live page covering the UN climate summit in Paris, COP21.
It's Friday 4th December and the two-week conference is approaching its halfway point.
This afternoon, we will bring you some of the latest developments - and at 17:00 GMT there will be a live video Q&A on this page, with BBC correspondent Matthew Price.
He is in northern Texas and will take your questions on how climate change is affecting that part of the world.
The BBC's COP21 live page is closing down for the time being.
Thankyou for reading, watching and contributing.
We will stream a second video Q&A with Matthew Price, live from Texas, on Friday afternoon - and our coverage will be back at full steam as the conference heads towards its conclusion next week.
23:00 CET and the press centre is not quite deserted
Our live video Q&A is now over. Thanks for watching, and for all your questions.
Highlights of the session will be available on this page tomorrow (Wednesday 2 December).
Matthew will be running another live Q&A - from Texas - on Friday afternoon.
Matthew Price
BBC correspondent
They no longer can rely on the old certainties. The old patterns of natural behaviour are no longer happening. Climate change is real, as far as the people of Vanuatu are concerned.
They hope that in Paris some sort of deal can be done, to make sure that whatever happens... places like this are as well prepared as they can be.
haveyoursay@bbc.co.uk
Chen Xinyu, Wuhan, China
Will there be a real agreement in this conference?
haveyoursay@bbc.co.uk
Dennis Tregellis emails:
Why are levels rising in the Pacific and not in the Atlantic or Indian Oceans?
Click on the 'Live Coverage' tab above to see the BBC's Matthew Price answering questions on climate change, live in Vanuatu.
Quote MessageWe feel very strongly that all the developed countries, they have to come up with a binding agreement. This is about our survival. They have to commit and they have to agree on this matter.
Jotham Napat, Director General, Ministry of Climate Change