GRETA Thunberg has been filmed chanting "you can shove your climate crisis up your a**e" at a snap rally in Glasgow. 

Hundreds of COP26 delegates have gathered at Festival Park in Govan to shun politicians for inaction over global warming.

The teenage climate activist has been leading the ongoing event and has called for world leaders to take the future "seriously". 

And she hasn't been holding in her demands as she addressed a sea of protestors with pickets. 

She said: "Inside COP there are politicians pretending to take our future seriously.

HeraldScotland:

“We say no more blah-blah-blah, no more exploitation of people, nature and the planet. No more whatever the f*** they’re doing inside there.”

Meanwhile, Sir David Attenborough addressed more than 100 world leaders at the opening ceremony of COP26. 

In his speech, he warned that humanity is “already in trouble” from climate change.

The climate campaigner charted carbon emissions throughout human history, which has peaked at 414 parts per million.

He said: “Our burning of fossil fuels, our destruction of nature, our approach to industry, construction and learning, our releasing carbon into the atmosphere – we are already in trouble."