“As we all know, the world is in trouble,” he said in the IGTV video, which has had more than 9 million views.
“But we know what to do about it,” he said.
Attenborough told viewers to tune in over the next few weeks to learn more about the problems — and solutions — the world faces when it comes to climate change.
“Over the next few weeks I’ll be recording messages to explain what the problems are and how we can deal with them,” he said.
Attenborough’s Instagram account will be run with the help of his colleagues, Jonnie Hughes and Colin Butfield, the pair wote in a message accompanying the 94-year-old’s first video.
“Social media isn’t David’s usual habitat,” they said.
“David Attenborough has spent a lifetime travelling, exploring the wild places of our planet and documenting the living world in all its variety and wonder. He’s also witnessed the damaged caused. Saving our planet is now a communications challenge. We know what to do, we just need the will,” they added.