It had been hoped the Acorn Project at St Fergus in Aberdeenshire could be ready by the middle of the decade.
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UK sets out net zero plans for greenhouse gases
The government reveals its long-awaited strategy days before global leaders meet for COP26 in Glasgow.
Top Stories
UK sets out net zero plans for greenhouse gases
The government reveals its long-awaited strategy days before global leaders meet for COP26 in Glasgow.
Households to get £5,000 to replace gas boilers
The England and Wales subsidies cover just 90,000 gas boilers out of more than 20 million households.
What does net zero mean?
Experts have recommended developed countries adopt targets to reduce emissions to net zero by 2050.
Hate mail shows our work is important - scientist
Prof Phil Jones, portrayed in BBC drama The Trick, says climate scientists must be protected.
$10bn James Webb telescope unpacked in Kourou
The successor to the Hubble space observatory will now be prepared for launch on 18 December.
The battle to make lighter life-saving body armour
New materials are making body armour lighter but nanotechnology could provide a breakthrough.
Diver finds crusader sword off Israel's coast
The blade, which is encrusted with marine organisms, is believed to be about 900 years old.
Featured Contents
UK sets out net zero plans for greenhouse gases
The government reveals its long-awaited strategy days before global leaders meet for COP26 in Glasgow.
Households to get £5,000 to replace gas boilers
The England and Wales subsidies cover just 90,000 gas boilers out of more than 20 million households.
What does net zero mean?
Experts have recommended developed countries adopt targets to reduce emissions to net zero by 2050.
Hate mail shows our work is important - scientist
Prof Phil Jones, portrayed in BBC drama The Trick, says climate scientists must be protected.
$10bn James Webb telescope unpacked in Kourou
The successor to the Hubble space observatory will now be prepared for launch on 18 December.
The battle to make lighter life-saving body armour
New materials are making body armour lighter but nanotechnology could provide a breakthrough.
Diver finds crusader sword off Israel's coast
The blade, which is encrusted with marine organisms, is believed to be about 900 years old.
Households to get £5,000 to replace gas boilers
The England and Wales subsidies cover just 90,000 gas boilers out of more than 20 million households.
What does net zero mean?
Experts have recommended developed countries adopt targets to reduce emissions to net zero by 2050.
Hate mail shows our work is important - scientist
Prof Phil Jones, portrayed in BBC drama The Trick, says climate scientists must be protected.
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Video caption: UK's only bonobos move into 'dream home' The primates have been making themselves at home in a larger enclosure at Twycross Zoo in Leicestershire.
Climate campaign walkers reach Bradford
Jhangir Ahmed
BBC Radio Leeds
A group of climate campaigner walking 500 miles from London to Glasgow have reached Bradford.
Copyright: BBCThe Carbon Copy campaigners are hoping to reach Glasgow by 31 October for the the start of COP26, the United Nations' climate change conference. They want to make the case for acting now to help protect the environment.
Ric Casale from Carbon Copy says: “We’ve met some great people and had some great conversations along the way about making a change to help the environment and we want to focus on what is happening locally."
Steven Haasz, who is also walking with the group, says: “We’re working with a lot of local groups and introducing them to other groups so they can work together to make change."
The walkers have been walking for 13 days and will have a short break in Bradford, before heading to their next stop in Skipton.
By Roger Harrabin
BBC environment analyst
Video content
Video caption: Life at 50C: The Baghdad traffic cop who works in 50C heat In Baghdad, Sergeant Saa’d has to brave increasingly extreme conditions to keep the city moving.
By Roger Harrabin
BBC environment analyst
Video content
Video caption: Labour: Miliband on government heat pump grant for gas boilers Government plans to replace boilers with heat pumps are "way short even of their targets" says the shadow climate change secretary.
By Brendon Williams
BBC News
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Video caption: Boris Johnson defends UK switching to green power by 2035 The PM defends plans to move entirely to green power generation by 2035, saying that it is propelled by "consumer choice".
By Reality Check team
BBC News
