Sir David Attenborough has called on all people to make positive changes for the planet in a new year's day message from isolation at his London home.
In the address released ahead of his latest natural history series A Perfect Planet, the 94-year-old broadcaster said he had, like so many, spent much of 2020 indoors, away from loved ones and nature.
"It has been a challenging few months for many of us, but the reaction to these extraordinary times has proved that when we work together, there is no limit to what we can accomplish," he said.
"Today we are experiencing environmental change as never before, and the need to take action has never been more urgent."
Sir David said the upcoming United Nations Climate Change Conference in Glasgow would be "a crucial moment in our history".
"This could be a year for positive change, for ourselves, for our planet and for the wonderful creatures with which we share it," he said.
He urged all people to consider making changes in the interests of restoring the planet.
"As we make our new years' resolutions, let's think about what each of us can do. What positive changes can we make in our own lives?"
The Perfect Planet five-part series was filmed in 31 countries across six continents and features the environmental impact of volcanoes, sunlight, weather, oceans and lastly, humans.
