Former Australian PM Malcolm Turnbull says Trump is the world's 'leading climate denier'

Turnbull says US president is 'actively working against global action to reduce emissions'

Donald Trump is the world's "leading climate denier", the former Australian prime minister Malcolm Turnbull has said.

Turnbull, who lost the prime ministership in August 2018 in part because of his own party's opposition to his plans to do more to reduce greenhouse gas emissions, made the comments to BBC Newsnight on Tuesday (Wednesday morning, Australian time).