There's been a historic split within the Greens on a core issue, and the move is raising questions over the future of the party.
On Thursday, three Greens senators — Nick McKim, Vanessa Bleyer, and Jordan Steele-John — crossed the floor, voting with the Coalition against a plan to use a National Park in New South Wales to offset climate pollution.
7.30's Political Editor Jacob Greber breaks down what happened, and Sarah Ferguson interviews Bob Brown.
0:00 - What happened in Parliament
3:53 - Bob Brown interview
7.30 is the ABC's flagship current affairs program, delivering original journalism, exclusive investigations, in-depth analysis and interviews on the major issues affecting Australia and the world.
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