Teen climate change activist Greta Thunberg has released a single with pop rock band The 1975.
On the track, the environmental campaigner reads out an essay about climate change over music performed by the Manchester musicians.
The 16-year-old says there are "no grey areas when it comes to survival", and says the human race is facing "a disaster of unspoken sufferings".
She continues: "Solving the climate crisis is the greatest and most complex challenge that homo sapiens have ever faced.
"The main solution, however, is so simple that even a small child can understand it. We have to stop our emissions of greenhouse gases."
Proceeds from the new single, entitled 'The 1975', will go to the activism group Extinction Rebellion.
The song - released overnight - will also feature on the band's next album, Notes on a Conditional Form.
Announcing the release of the track on Twitter, the band's lead singer Matthew Healy wrote: "Meeting Greta Thunberg was such an inspiration.
"We (The 1975) are very proud to say that our income from this track will be pledged to Extinction Rebellion."
Ms Thunberg, from Sweden, has become a leading voice on climate change.
She began the 'School Strike for Climate' movement on her own, which has now become a global phenomenon.
Earlier this year, a 15-metre high mural of her was painted on a wall in Bristol.
The artist said Ms Thunberg represented a "new movement" in the fight against climate change.