Scientist Dr Graeme Pearman knows more than most about the responsibilities and the perils that come with communicating climate change to the highest authorities.
As one of Australia’s highest ranking government scientists, he was asked into the offices of three consecutive Australian Prime Ministers to brief them on climate change.
In the late 1980s, it was Labor Prime Minister Bob Hawke. Then in the 1990s, it was Hawke’s Labor successor Paul Keating. As the decade wore on, it was the conservative Liberal Prime Minister John Howard on the other side of the briefing table.