Presenting the most vivid evidence to date, the UN's IPCC report has warned that humans are responsible for changes to the earth's climate.
The UN IPPC report into climate change, due out tomorrow, will say scientists agree the world is getting warmer, and humans are to blame.
The government's top scientific advisor has warned of greater variability in UK weather as a result of climate change
The latest update on the state of the world's climate will be released today in Stockholm, Sweden.
Scientists and government officials from 195 countries have meeting all week ahead of the publication from the UN-sponsored Intergovernmental Panel on Climate Change (IPCC).
The report builds on the four previous assessment reports produced by the IPCC since it was established in 1988. It will be published throughout the year in several parts:
- Part one: Physical science basis of climate change - September 2013
- Part two: Dealing with the impacts, adaptation and vulnerability relating to climate change - March 2014
- Part three: Assessing the mitigation of climate change - April 2014
- Final part: Synthesis Report - October 2014
A UN panel of global climate scientists are to make their strongest case yet for man-made global warming in a new report due to be released today.
Drafts show that the Intergovernmental Panel on Climate Change (IPCC) is set to pronounce that most of the warming of the Earth's surface since the 1950s is "extremely likely" - at least 95% probable - to be man-made.
The 30-page summary that the IPCC produces, the first of four about global warming in the coming year, is intended to be the main point of reference on the science of climate change for governments trying to develop their response to global warming.
Tomorrow, international experts will deliver their verdict on the state of climate change and are expected to say they are 95% percent certain it is happening.
ITV News' Science Editor Lawrence McGinty gathered leading leading voices in the global warming debate at London's Thames barrier to discuss the issue.
President Barack Obama said on Saturday that he will outline a climate change plan next Tuesday centred around reducing pollution from carbon emissions.
"This Tuesday, I'll lay out my vision for where I believe we need to go - a national plan to reduce carbon pollution, prepare our country for the impacts of climate change, and lead global efforts to fight it," he said in a White House video.
Barack Obama has said in a White house video message that he will lay out a plan to reduce carbon pollution in climate change speech on Tuesday.
The growing import of goods from abroad instead of manufacturing them here has fuelled an increase in carbon emissions, according to the government's climate change advisers.
Official figures show that Britain's carbon emissions have fallen by around 20% over the last two decades, partly as a result of manufacturing moving overseas. But this data does not include the emissions produced in the making and transportation of goods we import to the UK.
The Committee on Climate Change report found that when emissions 'embedded' in the goods we consume are taken into account, there has actually been a 10% rise since 1993.
The report concludes that official figures should continue to track only the emissions produced within UK borders since this is what other countries do, but that imports should also be monitored.
The Government's outgoing chief scientific advisor has called for urgent action to tackle global warming, warning climate change will bring greater extremes in weather.
Professor Sir John Beddington said the effects of climate change were already being felt in Britain.
"In a sense we have moved from the idea of global warming to the idea of climate change, and that is rather important - yes, indeed, temperatures are increasing, but the thing that is going to happen is that we are going to see much more variability in our weather", Sir John told BBC Breakfast.
"I think you only have to look at the last few years to see how that is actually starting to manifest itself even in the UK", he added.
He said there were "massive problems" in the world of food, water and energy security as the global population increases, all of which would be exacerbated by climate change.
Even if effective action was taken now on global warming, Sir John stressed there would be "significant" climate change over the next 20 to 25 years as results of past global emissions.
Ed Davey has today commissioned another report on fracking - this time to gauge the risks of increased methane emissions.
“Emissions of methane - which is a potent greenhouse gas - are already subject to control, but I am today commissioning a study of the possible impacts of shale gas development on greenhouse gas emissions and climate change," he said.