'What we are doing here is really important': Children march at the COP26

Children around the world have been marching to protest against climate change.

That's because Friday 5 November was youth day at COP26, the climate change conference where world leaders are meeting to decide what to do about the problem.

There were marches around the world, but the biggest one was in Glasgow, where thousands of children met up to make their voices heard.

Martin was there for Newsround and spoke to some of them.