David Woodfall / Protestors holding 'Rebel for life' banner at Extinction Rebellion climate change demonstration.. Westminster Bridge with Houses of Parliament in background, London, England, UK. 17 November 2...

David Woodfall / Protestors holding 'Ecological meltdown!' banner at Extinction Rebellion climate change demonstration. London, England, UK. 17 November 2019.

David Woodfall / London buses at standstill on bridge during Extinction Rebellion climate change demonstration when five main bridges across River Thames were blocked by protestors. .17 November 2019.

David Woodfall / London buses at standstill on bridge during Extinction Rebellion climate change demonstration when five main bridges across River Thames were blocked by protestors.17 November 2019.

Ben Gillett / The Red Brigade performance artists on Extinction Rebellion climate change protest march. Bristol, England, UK. 16 July 2019.

Patricio Robles Gil / Protestors with placards during 'Fridays for the Future' climate change protest. Paseo de la Reforma Avenue, Mexico City, Mexico. September 2019.

Patricio Robles Gil / Young protestors with placards chanting during 'Fridays for the Future' climate change protest. Paseo de la Reforma Avenue, Mexico City, Mexico. September 2019.

Danny Green / Grizzly bear (Ursus arctos) running through water, portrait. Lake Clark National Park, Alaska, USA. September.

Steven David Miller / Australian cattle dog running on Tallebudgera Beach, Gold Coast, Queensland, Australia.

Jack Dykinga / Burrowing owl (Athene cunicularia), two fledglings aged one month, one testing wings in flight. Marana, Arizona, USA. May.

David Woodfall / Young people protesting climate change at 'Strike 4 Climate Change' March. Shrewsbury, England, UK. March 2019. Editorial use only.

David Woodfall / Children protesting climate change at 'Strike 4 Climate Change' March. Shrewsbury, England, UK. March 2019. Editorial use only.