Unusually warm sea temperatures and the prospect for more to come have reef scientists worried that the Great Barrier Reef may experience another major coral bleaching event. And Sydney is also under threat.

The booming market for home storage could be thrown into disarray if proposed safety guidelines force owners to move their battery units outside.

Fossil fuels will be, by far, the predominant factor in the early deaths of Australians by mid-century.

• COMMENT

Consumers are voters and they won't forget who is to blame if there's a meltdown in our nation's energy supplies.

Meteorologists were predicting NSW would set a state-wide record for February warmth during the current heatwave but few would have tipped the mark would be broken two days in a row.

Human activity heats up cities to such an extent that on the weekends when we're having a sleep-in, the centre of town is measurably cooler.

Wayne "Bronco" Lunn has endured many summers in the shearing business in north-western NSW over four decades but he's never seen one like this year's.

• ANALYSIS

Pointing our solar panels in the wrong direction is only one quirk in our strained energy system.

The Turnbull government's recent embrace of coal-fired power shows it has "abandoned all pretense of taking global warming seriously", prompting Clive Hamilton to resign as a member of the Climate Change Authority.

The most extensive heatwave of the summer is building over inland Australia, setting up Sydney and much of the state for record-tilting heat over the coming weekend.

A gigantic, powerhouse winter storm is charging through the North Atlantic and threatens to flood the high Arctic with abnormally mild air.

Sydneysiders are sweltering through a hot and sticky Sunday, with temperatures passing the 30-degree mark since 9.30am.

Climate science at the CSIRO is bouncing back one year after executives modelled its demise, securing new revenue streams in the Pacific and China and looking to hire new staff.

"We are all very worried here," Rahmstorf, a professor at the Potsdam Institute for Climate Impact Research, says.

Less than one dollar in a thousand spent on health in Australia goes to one of the biggest threats facing the sector, a new paper finds.

Australia's top business groups have cautioned the government against making any more changes to the renewable energy target.

Sydney has marked its hottest ever month, with extended warm spells setting records at all metropolitan sites.

An unusually quiet period for cyclones in the Australian region may come to an end within days.

How tiny Huonville does well by doing good on the environment front.

Do big investments in solar energy point to a different future for the oil-rich nations of the Middle East?

Just moments after President Donald Trump took the oath of office on Friday, the official White House website was transformed to wipe out all mention of climate change.

The world's major meteorological agencies have declared 2016 to the hottest year on record - making it three new highs in as many years - as increases in greenhouse gases drove global warming.

Head of international energy body says policies are important, but the economic facts "are stubborn".

A political divide is forming over renewable energy's future in Australia.

In the United States in November, in a single 48-hour period, two hugely significant things happened. One of them received worldwide attention but the other, somewhat improbably, might yet turn out to be more important.

Australia posted its fourth-hottest year in 2016, driven by record sea-surface temperatures around the nation, in a period marked by frequent extreme events, the Bureau of Meteorology said.

Evidence the earth saw a slowdown in global warming over the past couple of decades has been further eroded

"It feels like you are at the centre of the Earth."

This year was Sydney's hottest year even without massive heatwaves but a monster mid-year storm provided the wildest weather.