The Turnbull government will stick with its existing climate policies after a year-long review concluded they are good enough to meet Australia's international commitment to cut emissions.
Labor senator Katy Gallagher's eligibility to sit in parliament is likely to be tested by the High Court after the Greens decided they were inclined to support any government referral.
Australian businesses could stand to make billions from climate-related investments but they'll need the right government frameworks to help it happen.
George Christensen will resign as the Nationals' chief whip after leader Barnaby Joyce gave him an ultimatum over his increasing outspokenness.
The Turnbull government has been warned the private sector has no appetite to invest in new coal power and that it will never be viable without carbon capture and storage.
The Clean Energy Regulator has castigated a major electricity company for choosing to pay a $123 million penalty rather than build or contract new wind or solar power.