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New Forest Octopus-like tentacles are stained with what appears to be congealed blood and there’s a stink of rotting flesh

Naturalists need good contacts, and generalists such as me depend on observant friends to pass the word when they see anything that might be of interest. A phone call alerted me. My friend had spotted a photographer at work, and enquired what he was taking. He had been tipped off that there was a rare fungus nearby and had come to get some pictures of it. Jeremy thought I should know.

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Health comes from the ground up, Charles Massy says – yet chemicals used in agriculture are ‘causing millions of deaths’. Susan Chenery meets the writer intent on changing everything about the way we grow, eat and think about food

The kurrajong tree has scars in its wrinkled trunk, the healed wounds run long and vertical under its ancient bark. Standing in front of the homestead, it nestles in a dip on high tableland from which there is a clear view across miles and miles of rolling plains to the coastal range of south-east Australia.

Charles Massy grew up here, on the sweeping Monaro plateau that runs off the eastern flank of Mount Kosciuszko, an only child enveloped by the natural world, running barefoot, accompanied by dogs and orphaned lambs. Fifth generation, he has spent his adult life farming this tough, lean, tussock country; he is of this place and it of him. But when his friend and Aboriginal Ngarigo elder Rod Mason came to visit he discovered that a lifetime of intimately knowing the birds, trees and animals of this land wasn’t significant at all.

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A new book tells the story of farmers embracing 'regenerative agriculture' to return health to the soil, while increasing their profitability. Solar and sustainability values put an off-grid Tasmanian winery on the tourist and Tesla map, while a trial of off-grid power in a WA farming community shows positive results.

Wallamba Island is transformed from a dairy farm into a wildlife refuge; we cuddle camels at Gympie; make art from fruit and veg boxes; and check out a working dog challenge.

The near-6,000 sq km block of ice known as A-68 looks finally to be on the move.

The week’s top environment news stories and green events. If you are not already receiving this roundup, sign up here to get the briefing delivered to your inbox

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A selection of the best photographs from around the word including Milan fashion, the autumn equinox and some herdsmen in lederhosen

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Decaying notebooks discovered in an abandoned research station contain a treasure trove of tree growth data dating from 1930s

A cache of decaying notebooks found in a crumbling Congo research station has provided unexpected evidence with which to help solve a crucial puzzle – predicting how vegetation will respond to climate change.

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A rare rhinoceros under constant protection, an albino orangutan, and protected pandas are among this week’s pick of images from the natural world

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Climate policy has become bogged down in the debate over a clean energy target. Shutterstock

Malcolm Turnbull’s government has been wrestling with the prospect of a clean energy target ever since Chief Scientist Alan Finkel recommended it in his review of Australia’s energy system. But economist Ross Garnaut has proposed a path out of the political quagmire: two clean energy targets instead of one.

Garnaut’s proposal is essentially a flexible emissions target that can be adapted to conditions in the electricity market. If electricity prices fail to fall as expected, a more lenient emissions trajectory would likely be pursued.

This proposal is an exercise in political pragmatism. If it can reassure both those who fear that rapid decarbonisation will increase energy prices, and those who argue we must reduce emissions at all costs, it represents a substantial improvement over the current state of deadlock.

Ross Garnaut/Yann Robiou DuPont, Author provided Will two targets increase investor certainty?

At a recent Melbourne Economic Forum, Finkel pointed out that investors do not require absolute certainty to invest. After all, it is for accepting risks that they earn returns. If there was no risk to accept there would be no legitimate right to a return.

But Finkel also pointed out that investors value policy certainty and predictability. Without it, they require more handsome returns to compensate for the higher policy risks they have to absorb.

Read more: Turnbull is pursuing ‘energy certainty’ but what does that actually mean?

At first sight, having two possible emissions targets introduces yet another uncertainty (the emissions trajectory). But is that really the case? The industry is keenly aware of the political pressures that affect emissions reduction policy. If heavy reductions cause prices to rise further, there will be pressure to soften the trajectory.

Garnaut’s suggested approach anticipates this political reality and codifies it in a mechanism to determine how emissions trajectories will adjust to future prices. Contrary to first impressions, it increases policy certainty by providing clarity on how emissions policy should respond to conditions in the electricity market. This will promote the sort of policy certainty that the Finkel Review has sought to engender.

Could policymakers accept it?

Speaking of political realities, could this double target possibly accrue bipartisan support in a hopelessly divided parliament? Given Tony Abbott’s recent threat to cross the floor to vote against a clean energy target (bringing an unknown number of friends with him), the Coalition government has a strong incentive to find a compromise that both major parties can live with.

Read more: Abbott’s disruption is raising the question: where will it end?

Turnbull and his energy minister, Josh Frydenberg, who we understand are keen to see Finkel’s proposals taken up, could do worse than put this new idea on the table. They have to negotiate with parliamentary colleagues whose primary concern is the impact of household electricity bills on voters, as well as those who won’t accept winding back our emissions targets.

Reassuringly, the government can point to some precedent. Garnaut’s proposal is novel in Australia’s climate policy debate, but is reasonably similar to excise taxes on fuel, which in some countries vary as a function of fuel prices. If fuel prices decline, excise taxes rise, and vice versa. In this way, governments can achieve policy objectives while protecting consumers from the price impacts of those objectives.

The devil’s in the detail

Of course, even without the various ideologies and vested interests in this debate, many details would remain to be worked out. How should baseline prices be established? What is the hurdle to justify a more rapid carbon-reduction trajectory? What if prices tick up again, after a more rapid decarbonisation trajectory has been adopted? And what if prices don’t decline from current levels: are we locking ourselves into a low-carbon-reduction trajectory?

These issues will need to be worked through progressively, but there is no obvious flaw that should deter further consideration. The fundamental idea is attractive, and it looks capable of ameliorating concerns that rapid cuts in emissions will lock in higher electricity prices.

For mine, I would not be at all surprised if prices decline sharply as we begin to decarbonise, such is the staggering rate of technology development and cost reductions in renewable energy. But I may of course be wrong. Garnaut’s proposal provides a mechanism to protect consumers if this turns out to be the case.

Bruce Mountain does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond the academic appointment above.

Authorities in Australian coastal town will exhume the body of the 20-tonne humpback over fears it is attracting sharks

Authorities in the Australian coastal town of Port Macquarie will dig up the carcass of a 12-metre, 20-tonne humpback whale from a local beach and dump it in landfill because of fears the animal is attracting sharks.

On Friday, officials at the Port Macquarie Hastings Council announced that the body of the whale, which was buried as an “option of last resort” after it washed up on Nobbys Beach in the beach town in New South Wales on Sunday, would be removed following an outcry from local residents.

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Sceptics prefer to reject regulations to combat global warming and remain indifferent to the havoc it will wreak on future generations

From my vantage point outside the glass doors, the sea of grey hair and balding pates had the appearance of a golf society event or an active retirement group. Instead, it was the inaugural meeting of Ireland’s first climate denial group, the self-styled Irish Climate Science Forum (ICSF) in Dublin in May. All media were barred from attending.

Its guest speaker was the retired physicist and noted US climate contrarian, Richard Lindzen. His jeremiad against the “narrative of hysteria” on climate change was lapped up by an audience largely composed of male engineers and meteorologists – mostly retired. This demographic profile of attendees at climate denier meetings has been replicated in London, Washington and elsewhere.

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When Amsterdam removed signals from a busy junction, it made journeys faster and interactions more pleasant. Now the approach is being copied across the city

On a foggy Monday morning in May 2016, 14 Amsterdam officials, engineers and civil servants gathered nervously at Alexanderplein – a busy intersection near the city centre with three tramlines – where many people were walking, driving, and, as in any Dutch city, riding bicycles. With a flip of a switch, the traffic controls were shut off for all transport modes, in all directions.

This live pilot project came about as a result of the rapid growth in cycling in some Amsterdam neighbourhoods. Nearly 70% of all city centre trips are by bicycle, and more space is needed on the bike networks. Traffic designers are deviating from standard design manuals to accommodate this need. Among the tactics being used are the removal of protective barriers, altering light phases, reducing vehicular speed limits and designating entire corridors as “bicycle streets”. Designers have created their own toolbox of solutions for other Dutch cities to use.

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Magilligan Point, County Derry The botany of the spit was once so rich that it was known as the ‘medicine garden of Europe’

The view from the top of the basalt outcrop of Windy Hill is sublime. Below, the flat expanse of Magilligan Point, County Derry, narrows into the distance as it almost reaches across the mouth of Lough Foyle to the heather-topped green hills and little white cottages of Donegal, six miles away.

Most of the sandy spit has been converted into grazed farmland, the field boundaries following the lines of ancient sand ridges deposited as the point has grown since the last ice age. A half-mile wide strip along the western edge, facing the Atlantic, is still wild sand dunes, tall and rough. A stiff breeze blows up and over the rocky ridge and to the east dark grey storm clouds roll.

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Wind energy posts record output in August, with renewables delivering 25 per cent of all demand at the evening peak.

Mark Bailey is returning to duty as Minister for Main Roads, Road Safety and Ports and Minister for Energy, Biofuels and Water Supply, effective today.

Fears of the unstoppable energy transition are reinforced and amplified by vested interests and selfish, small minded losers who try and slow it down. Look at how energy prices jumped since Coalition's intervention on Liddell.

Something is fundamentally wrong in the NEM. Frequency control costs have risen dramatically, but the quality of the service has dived.

ARENA tips $2.5m into feasibility studies for doubling of Tasmania hydro capacity and developing 2.5GW of pumped hydro storage.

It seems there is no climate and clean energy myth conservatives and the Murdoch media won't repeat. Just as well we have renewable energy and smart businesses.