It's been a long time coming, but the Nationals have finally agreed in-principle on terms for a net zero by 2050 target.

Announcing the deal on Sunday evening, Barnaby Joyce wouldn't say what the final conditions were, and who in the party was still against it, but there are plenty of early indications.

Today on The Signal, what do we know so far about Australia's all but finalised net zero deal?

And how does Australia's brand new policy on emissions stack up on the world stage?

Featured:

David Speers, Host, ABC Insiders

Dr Bill Hare, climate scientist & Director, Climate Analytics