Leader of the Greens and de-facto Prime Minister Bob Brown has resigned as Greens leader. He also intends to stand down from the Senate in June.
Update: A strange decision given he said in May last year Rupert Murdoch was his role-model on retirement. Brown is 67, Murdoch is 81.
Update: Christine Milne new leader, while sole House of Representatives MP, Member for Melbourne Adam Bandt will become Deputy Leader.