Teenage climate activist Greta Thunberg addresses protests in Bristol
She tells the crowd to be "the adults" in the environmental batttle
Greta Thunberg has taken aim at officials and governments as she told thousands of climate activists that "they are behaving like children, so it falls on us to be the adults in the room".
The 17-year-old activist was the headline speaker at The Bristol Youth Strike 4 Climate on College Green in the city, which she said she chose to visit because the environmental movement there was "very strong".
Police said there were more than 20,000 at the event, although organisers said they estimated the figure to be closer to 30,000.
Greta took aim at officials as she delivered her speech, saying: ""Once again, they sweep their mess under the rug for us - young people, their children - to clean up for them.
"But we must continue and we have to be patient. Remember that the changes required will not happen overnight since the politics and solutions needs are far from sight."Published: by Radio NewsHub