“As we all know, the world is in trouble,” he said on the IGTV video, which has been viewed more than 9 million times.
“But we know what to do about it,” he said.
Attenborough urged viewers to tune in over the next few weeks to learn more about the problems – and solutions – the world is facing to climate change.
“For 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 is operated with the help of colleagues Jonnie Hughes and Colin Butfield. The couple wrote a message about the 94-year-old’s first video.
“Social media is not David’s usual habitat,” they said.
“David Attenborough has traveled a lifetime, exploring the wild places on our planet and documenting the living world in all its diversity and wonder. He has also witnessed the damage it has caused. Saving our planet is now a communication challenge. We know what to do do is. We just need the will, “they added.