Prince Harry will edit the National Geographic Instagram account today after saying conservation is "critical to our survival."
The Duke of Sussex will manage the magazine's Instagram account, which has 123 million followers, during its official South African tour.
It is part of the “Looking Up” social media campaign, which raises awareness about the role trees play in the Earth's ecosystem.
Followers will be invited to share their own images of trees from around the world.
Prince Harry will also work with National Geographic photographers to highlight indigenous trees and share an image taken in Liwonde National Park, Malawi, where he is presenting two initiatives to help preserve the trees in the area.
He is currently on the eighth day of his official tour in Africa.
The Duke of Sussex commented in The Daily Telegraph that conservation should not be dismissed as "hippie".
He told the newspaper that humans must overcome "greed, apathy and selfishness" to save the planet.
"This may seem hippie to some.
Prince Harry attends a tree planting event with school children in Botswana
"But we can't afford to have a mentality – they or us. Humans, animals and their habitats need to fundamentally coexist or, over the next ten years, our problems around the world will become even more unmanageable. . "
"Nature teaches us the importance of a circular system, a system where nothing is wasted and everything has a role to play.
"If we interfere with it, instead of working with it, the system will fail.
Prince & # 39; escaped & # 39; to Botswana after Diana's death
"Conservation used to be a specialized area, driven by science.
"But now it is critical to our survival and we must overcome greed, apathy and selfishness if we are to make real progress."
Earlier this year, the Duchess of Sussex edited a Vogue issue highlighting "women who make changes" and interviewing former first lady Michelle Obama.
She was strongly criticized for her guest appearance, although several royals, including Kate Middleton and Prince Charles, have previously collaborated with media organizations.