Schoolchildren across the Anglia region have joined others across the world in leaving classes to protest against climate change.
Events in the East of England are being held in Colchester, Cambridge, Norwich, Ipswich and King's Lynn.
Hundreds of pupils turned out to protest at the Shire Hall in Cambridge before marching into the city centre to the Guildhall
Schoolchildren in Cambridge have set up an eco-council to work together to learn about, and find solutions to, the climate and ecological crisis.
"We are truly in a climate emergency, and we need to act quickly to prevent an unimaginable future of heatwaves, extreme weather events, crop failures, and eventually wars over resources such as land, food and water. We are afraid for our own future and for generations of children to come, and the terrifying changes are already happening."
Watch a report on the climate change protest in Cambridge by ITV News Anglia's Claire McGlasson
Organisers of the Youth Strike 4 Climate say events will take place in morethan 100 towns and cities around the UK in the second walkout for climate action in the UK.
Driven by what students say is "an alarming lack of government leadership on climate action", the strikes are part of a global day of walkouts and demonstrations by young people in more than 100 countries.
Watch a report on the climate change protest in Norwich by ITV News Anglia's Natalie Gray
The protestors have been inspired by teenager Greta Thunberg, who protests every Friday outside Sweden's parliament to urge leaders to tackle climate change.
Organisers here say they expect attendances to be larger than the first UKstrike on February 15, which saw thousands of students defy headteachers and politicians to ditch lessons for demonstrations.