History was made in Australia today, with the first treaty with Aboriginal people signed into law in Victoria. So what will change?

Also, the Liberal party has officially dropped net zero as its climate policy, but still says it wants to bring down emissions. 

And could humanity be destroyed in an afternoon? Nobel Peace Prize laureate Professor Tilman Ruff has spent decades campaigning for nuclear disarmament, and right now he's worried.

Listen now:

01:16 - Australia's first, first nations treaty 

06:55 - The Liberal Party is officially dumping net zero

12:00 - What would a nuclear war look like?

Guests:

• Dr Tilman Ruff, Nobel laureate and Co-President, International Physicians for the Prevention of Nuclear War

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