Christine Milne (Tasmania, Australian Greens) Share this | Hansard source

Mr President, I ask a further supplementary question. I note that the minister did not respond to how many decades she does think we have to address this issue. Is the government aware of recent findings by Australian scientists in the CRC for Antarctic Climate and Ecosystems that an atmospheric carbon concentration of 450 parts per million is a tipping point for ocean acidification that would lead to a collapse in the ocean food chain? If so, why is the government aiming, at best, for a 510 parts per million target that will push us over the tipping point?