LONDON (Reuters) – Britain’s Prince Charles and his two sons William and Harry attended the world premiere of the Netflix television series “Our Planet” on Thursday to underline the royal family’s support for action against climate change.

Britain’s Prince Harry, Prince William, Prince Charles and British naturalist David Attenborough attend the global premiere of Netflix’s “Our Planet” at the Natural History Museum in London, Britain April 4, 2019. REUTERS/John Sibley/Pool

British naturalist David Attenborough, 92, who narrates the series, hosted the event at London’s Natural History Museum.

Charles, who paid tribute to Attenborough’s work, made his first speech on the environment in 1968 and has long warned of the dangers of human damage to the natural world.

“What I want to know is how can we