France's largest insurer will scrap holdings in coal companies because of concerns about climate change, broadening support for the fossil-fuel divestment movement to a major mainstream investor.

Report on solar power puts the capital cost of household systems at $18 billion, with benefits of $9 billion.

Scientists announced this week they had not only located a gene that determines sex in developing mosquito embryos but when they tweaked it female offspring were born with male genitals.

Royal Dutch Shell and its peers in Europe are slowly waking up to the existential danger to their operations emerging from policies designed to limit climate change.

The NSW Planning Department has defended its decision to refer a planned Rio Tinto coal mine project in the Hunter Valley to the Planning Assessment Commission, saying it had strengthened condition

The world subsidises energy consumption to the tune of more than $200,000 per second, with about 60 per cent of that going to support coal, according to researchers at the International Monetary Fu

Six billion dollars in investment in wind and solar power will be lost as a result of a compromise deal on the renewable energy target, energy market analysts say.

A deal has been reached to reduce Australia's renewable energy target to 33,000 gigawatt hours after the government agreed to drop regular reviews of the scheme.

Last month was within 0.01 degrees of being the equal warmest April in records going back to 1891, adding to the hot start to 2015, the Japan Meteorological Agency says.

Victoria wants to establish its own target to boost renewable energy the Andrews government has declared, but it first needs Canberra to lift legal barriers preventing it from doing so.

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