Sir David Attenborough says humans have 'overrun the world' in the trailer for his new film David Attenborough: A Life on Our Planet.
The documentary, which looks at the environmental changes that happened on Earth over his lifetime, also offers some solutions to the climate crisis.
Sir David has a history of making programs about the climate emergency, including last years BBC One documentary Climate Change: The Facts, and Our Planet which screened on Netflix.
'Overrun the world'
"I am David Attenborough, and I am 93. I've had the most extraordinary life. It is only now that I appreciate how extraordinary," Sir David says in the film's trailer.
"The living world is a unique and spectacular marvel, yet the way we humans live on earth is sending it into a decline.
"Human beings have overrun the world. We're replacing the wild with the tame. This film is my witness statement and my vision of the future.
"Our planet is headed for disaster. We need to learn how to work with nature rather than against it and I'm going to tell you how."
'A powerful message'
"For decades, David has brought the natural world to the homes of audiences worldwide, but there has never been a more significant moment for him to share his own story and reflections," added Colin Butfield of conservation organization The WWF, which helped produce the film
"This film coincides with a monumental year for environmental action as world leaders make critical decisions on nature and climate.
"It sends a powerful message from the most inspiring and celebrated naturalist of our time."
David Attenborough: A Life on Our Planet launches in cinemas on April 16 and will be screened on Netflix.