Today is all about Hillary Clinton vs Donald Trump, but a possibly even more interesting meeting of the minds has seemingly been locked in between a federal senator and Australia's most beloved scientist.
One Nation senator Malcolm Roberts came into parliament as a loud and proud sceptic of climate science. This week he presented a report he had compiled, claiming that the CSIRO had not done due diligence on the climate data it used. He has been vocal on Twitter since, challenging critics and spruiking upcoming public events that some of his climate sceptic supporters will be hosting. On Tuesday night, he tweeted this:
Then Dr Karl popped up to reply.
Dr Karl Kruszelnicki is arguably Australia's most recognisable scientist; a regular commentator and panellist on television, with regular slots on radio including Triple J, and a published author with a whole swag of successful books, he has built a career out of making science accessible and fun for Australians. He seemed unwilling to let Roberts' climate scepticism go unchallenged.
Roberts then challenged Dr Karl to a debate.
He initially hesitated.
Then entertained the idea.
And then, suddenly, just 50 minutes after Roberts first floated the idea, the debate was seemingly locked in.
Roberts snapped it up, and then put out the question to his own followers on how the debate should go.
Of course, some responses weren't exactly what he was looking for....
No word yet on when exactly this debate will be happening, but it's not the first time Roberts has challenged a well-known scientist. On Q&A, Roberts took on Professor Brian Cox live on air, but Cox came prepared:
Roberts also took on Australia's chief scientist, Dr Alan Finkel, during a Senate estimates hearing. Roberts asked why he believed that carbon dioxide affected climate. Finkel gave a pretty clear explanation.
We'll let you know when we hear more about this Roberts vs Kruszelnicki debate is on.