Young people have joined forces again to protest about climate change.
In Cambridge around 200 activists lay down in the road outside King's College. They wore blue clothes to symbolise rising sea levels.
The eleven minute protest represented the number of years until they believe climate change will become irreversible.
Speeches outside Shire Hall had kicked off the event. But it attracted perhaps only a fifth of the number who attended a similar demonstration here last month.
That was part of an international day of action - and during term time with many children skipping school to take part.
Those who turned out were giving up a day in their holiday for a cause they believe in.
The former Archbishop of Canterbury Dr Rowan Williams was one of those to address the rally.
While among those applauding their effforts was city MP Daniel Zeichner.
The young people say they'll keep organising demonstrations until governments around the world act on an issue they believe will otherwise destroy their futures.
Children in Norwich have also been taking part in another global demonstration for greater action against climate change.
They gathered outside the Forum in Norwich.
It's the third time the pupils are joining the Youth Strike For Climate protests, but the first time they're doing it out of school hours. The youngsters used their Easter holidays to demand the government do more about the climate crisis.