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Pupils from around the UK went "on strike" on Friday as part of a global campaign for action on climate change.
Students around the country walked out of schools to call on the government to declare a climate emergency and take active steps to tackle the problem.
Organisers - Climate - Protests - Place - Towns
Organisers Youth Strike 4 Climate said protests took place in more than 60 towns and cities, with an estimated 15,000 taking part.
They carried placards, some reading: "There is no planet B."
'Why we skipped school'
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Action - Part - Wider - Movement - Schools
The action was part of a much wider global movement, known as Schools 4 Climate Action.
It began with 15-year-old Swede Greta Thunberg skipping class to sit outside government buildings in September, accusing her country of not following the Paris Climate Agreement.
Tens - Thousands - Children - Belgium - Germany
Since then, tens of thousands of children across Belgium, Germany, Sweden, Switzerland and Australia have been inspired to hold their own demonstrations.
The biggest protests were held in London, Brighton, Oxford and Exeter, the UK Student Climate Network said.
Group - Protests - Key - Demands
The group, which helped coordinate the protests, has four key demands:
The government should declare a "climate emergency"
Curriculum - Crisis
The national curriculum should be reformed to include "the ecological crisis"
The age of voting should be lowered to 16 so younger people can be involved in decision-making around environmental issues.
Greta - UK - Protests - PM - Children
Greta tweeted about the UK protests, writing: "British PM says that the children on school strike are 'wasting lesson time'. That may well be the case.
"But then again, political leaders have wasted 30 yrs of inaction. And that is slightly worse."
Children - Strike - Planet
Scottish children strike 'to save planet'
A Downing Street spokeswoman said that, while it was important for young people to engage with issues like climate change, the disruption to planned lesson time was damaging for pupils.
National - Association - Head - Teachers - Children
The National Association of Head Teachers said it did not condone children missing school to take part in the action...
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