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Temperatures in a city in the desert state of Rajasthan have hit 51C (123.8F) – the highest on record in India. A drought has left many villages and towns without regular water. Schools have closed, some hospitals have stopped performing surgery, and in some regions daytime cooking has been banned due to the fire risk

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Nobel chemistry laureate spots DNA error on Turkish banknote.

The first of its kind, a new international treaty obliges signatories to intercept pirate fishers before they can sell their catch

In March, the Argentinian coast guard shot at and sank a Chinese vessel that was alleged to be fishing illegally in Argentinian waters (the crew were all rescued). While it’s unclear whether the boat was committing crime, the incident showed that the tension surrounding pirate fishing is reaching a peak, marked elsewhere by increasing conflict, and the detainment and scuttling of illegal fishing fleets. But for pirate fishers, the financial gains appear to be worth these risks.

Illegal fishing vessels siphon off up to 26 million tons of illegally caught fish each year, which amounts to over $23bn (£16bn) in profit. This not only deprives legitimate fishers of their catch, but as it’s an unregulated practice, it also undermines the stability of fisheries stocks around the world. Illegal fishing also has a hand in driving already threatened species closer to extinction—like the critically-endangered vaquita, the world’s smallest porpoise, whose fate is rapidly being worsened by illegal fishers in Mexico who tangle and drown the small, protected mammals in their gill nets.

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UN’s top environmental scientist warns bottles and bags do not break down easily and sink, as report highlights the ubiquity of plastic debris in oceans

Biodegradable plastic water bottles and shopping bags are a false solution to the ubiquitous problem of litter in the oceans, the UN’s top environmental scientist has warned.

Most plastic is extremely durable, leading to large plastic debris and “microplastics” to spread via currents to oceans from the Arctic to the Antarctic, a UN report published on Monday found.

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A strange sea-dwelling reptile fossil suggests there was a burst of evolution after the mass extinction 250 million years ago.

BBC science correspondent Rebecca Morelle travels to China to take a close up tour of the Five-hundred-metre Aperture Spherical Telescope - or Fast for short.

With a federal election looming, Australia’s top mandarins will once again be turning their minds to the incoming government briefs, the so-called blue book if the Coalition is returned and the red book if Labor is elected.

High on the agenda will be the organisation of the bureaucracy and it won’t get any trickier than climate change.

A question for an incoming government will be whether to re-establish a Department of Climate Change?

And if not, what should be done?

Pass the parcel

To state the obvious, the past decade of Australian climate politics has been anything but stable. Climate agencies have been established, abolished and merged at a rate reflecting the volatility of policy settings.

As prime minister, John Howard established Australia’s first standalone climate agency in 1998, the Australian Greenhouse Office. Six years later, it had been merged into the then Department of the Environment and Heritage.

As a statutory agency it was the first in the world dedicated to reducing greenhouse gas emissions, but it didn’t have a secretary to represent it at the highest levels of government.

This changed in 2007 with the election of the Labor government, which had campaigned on climate change. The new prime minister, Kevin Rudd, created the Department of Climate Change.

This was the first time that climate change was given its own secretary and its own minister in cabinet. Both were within the prime minister’s portfolio to underline the importance of climate change to the government.

Martin Parkinson, now the secretary of the Department of the Prime Minister and Cabinet, had the task of establishing the new department as its first secretary. It was to have a broad scope, with a remit not just for domestic climate policy, but also responsibility for international climate change negotiations. This had until that point resided in the Department of Foreign Affairs and Trade (DFAT). It was to be responsible for policy but not implementation.

The new department lasted only six years. In 2013, it was merged into the Department of Industry under then prime minister Julia Gillard, perhaps in the hope that it would be saved from the wrath of the Liberal opposition leader, Tony Abbott, whose likely victory had been based on abolishing Labor’s climate policies.

Abbott’s ascension to the prime minister’s office later that year coincided with another shift. History was repeated as climate change was sent to the Department of Environment, with the international negotiations returning to DFAT.

Do we need a climate department?

Little has changed since under Malcolm Turnbull’s prime ministership and, with this history, only a fool would predict what’s next. But with an election in the offing, there is every reason to believe more change is on its way.

There are three things to consider.

First, representation. Climate change is arguably the greatest economic and security threat that Australia faces. As a result, it demands proper representation within government.

That means that climate change needs to be represented by its own departmental secretary in the bureaucracy and its own minister in the cabinet. In practice this could mean either a separate department, or the explicit inclusion of climate change in the title of a department with additional responsibilities.

Second is the scope of the portfolio. At the domestic level, the causes of climate change – fuel combustion for energy, and land-use change – are associated with almost every domestic economic activity. This means that the climate portfolio must have a wide remit.

But a climate change department cannot be a department of everything. Where to draw the line?

Other countries (such as Denmark and the United Kingdom) have combined climate change and energy, but that implies that the land sector is of secondary importance. In Australia that would be a mistake because agriculture, for example, produces roughly 13% of our emissions and land use is hugely important in adapting to the changing climate.

At the international level, the fact that climate change is a global problem means there will always be a diplomatic dimension to the portfolio. DFAT’s prioritising of fossil fuel trade lost it the leadership of international climate change processes under Labor, but under Foreign Minister Julie Bishop DFAT has been more strategic.

The Paris climate summit last December represented a major shift towards integrating climate and development policies. Aid policies will play a critical role, so the case for continued DFAT leadership internationally is strong.

The third thing to consider is transparency. If Australia is to meet its emissions targets, which are likely to become more stringent over time, business is going to have to shoulder the burden of change. To be sure, an emissions trading scheme, or something like it such as a baseline and credit scheme, will require fundamental changes to the Australian economy.

Any climate change agency will need to be open and transparent in the way it consults and manages not only environment groups but business too. These will have to be brought on board if change is to proceed smoothly.

Doing what’s possible

On this basis, there are good reasons for the incoming government briefs to recommend the re-establishment of a department of climate change. This would satisfy the question of representation, especially if a well-respected senior public servant were appointed to the helm.

If it develops a transparent culture that is open to all stakeholders, Australia might just be able to establish a climate department for the long term.

What recommendations end up in the red or blue book we may never know. The choices of a new government may express simple political preference. Labor may be more inclined to bring climate change policy under one bureaucratic roof and the Coalition to maintain the status quo.

Regardless, history suggests we need top-down co-ordination to build coherent policy. If a department of climate change is too difficult, a standing committee of cabinet will be essential to avoid reliving past failures.

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond the academic appointment above.

India launches an unmanned model space shuttle into orbit, joining the race to develop reusable space crafts.

AAP/Lukas Coch

Two weeks into a protracted election campaign, it is looking ever-more likely that climate change is to be placed way down the order of business – at least for the major parties.

The contest over climate change that characterised the previous three elections seems to have disappeared off the political radar despite the issue being more urgent than ever. Since the Paris climate summit, global average temperatures continue to break month-on-month records.

Just a few weeks after the summit, the North Pole was briefly not even able to reach freezing point – in the middle of winter. And just this month, Cape Grim surpassed a 400 ppm baseline minimum.

Then there is the truly frightening climate spiral developed by Ed Hawkins from the University of Reading. It shows what an El Niño amplified global temperature has climbed to. The spiral assumes a tight-knit but ever-expanding ball until April 2015, when the spiral line starts to separate dramatically from the ball. This year it careers dangerously close to the 1.5℃ threshold.

Climate spiral. Ed Hawkins The diminishing political and media spiral on climate

While global temperatures may be spiralling out of control, the opposite appears to be happening with the climate issue attention cycle in Australia.

Apparently, climate is less important than jobs and growth – or, in Labor’s case, health and schools.

A big part of this change in political climates is undoubtedly the Paris summit itself. The political triumphalism of the summit belies the scientific pessimism of so many climate scientists and activists.

Kevin Anderson from Manchester University’s Tyndall Centre for Climate Change Research even declared the summit to be “worse that Copenhagen”, in that it is based on out-of-date science, does not include aviation and shipping, and includes negative emissions in its scenarios for achieving abatement.

On the other hand, after the collapse of talks at Copenhagen, some activists see no choice but to climb aboard with the Paris agreement, insofar as it at least signifies a mainstream seachange in action – even if the actual measures are inadequate. The INDCs that came out of the conference still put the world on a path to 3.5℃.

Yet so many politicians from around the globe have sought to convince their constituents that the climate problem is all but solved. The Coalition is banking on such a sell to the Australian electorate as it gambles with a climate attention minimisation strategy. Much of this sell has been left to the “best minister in the world” Greg Hunt, both before and after the Paris summit.

Hunt has already claimed success on meeting the 2020 target, and with strategies to meet the 2030 target.

Little of the Government’s progress in meeting the 2020 target is due to reducing emissions. Rather it has been the reduction in land-clearing, consumer-driven domestic solar, and the decline in manufacturing that have been decisive in meeting the 2020 targets.

The Guardian’s Lenore Taylor has pointed out that while the Coalition is bringing back the “carbon tax” scare campaign of 2013, its own scheme would have to draw on the “safeguard mechanism” component of Direct Action – which is itself a disguised ETS – to have any chance of meeting the targets.

Short of leaning on this mechanism, the only other option the Coalition has is to increase the taxpayer-funded emissions reduction fund to a level that would make a mockery of any claims to budget responsibility.

Add to this the fact that recent academic research on Direct Action has reaffirmed its status as a form of corporate welfare that is allocated to projects that would have happened anyway. And all this is in an Australia that has increased its already high emissions 3% since 2000.

Shifting voter attitudes on climate

But have Hunt’s strategies worked on the Australian electorate? Not according to a recent ReachTEL poll of 2,400 respondents on May 9, which revealed that 56% believed the government needed to do more to tackle global warming.

64% said they would be more likely to vote for a party that has a plan to source 100% of Australia’s electricity from renewable sources like wind, solar and hydro in the next 20 years.

Prime Minister Malcolm Turnbull seems to have switched off his personal barometer on climate as an issue that is too politically fraught. In 2010, he said:

We know that the consequences of unchecked global warming would be catastrophic … We as a human species have a deep and abiding obligation to this planet and to the generations that will come after us.

But since then, Turnbull appears to have sacrificed his convictions to the climate-illiterate backbench of his party.

Labor has not done much better. While it has more ambitious 2030 abatement targets than the Coalition, it has been particularly silent in reminding voters of its climate policy alternative.

Labor and the Greens

Both major parties have opted to entrench their duopoly by not going after big targets on any of the issues that are usually recycled at election time.

Instead, much airtime has been spent in the opening weeks of the campaign attacking the Greens. Liberal ministers take every opportunity to pillory any alliance between the Greens and Labor. Last week, Finance Minister Mathias Cormann told Fairfax Media:

We see them very much on a unity ticket. In our judgement, Labor and the Greens are now on an anti-business, anti-jobs, and anti-growth unity ticket.

In the same week, Turnbull labelled Labor’s proposal to double the intake of refugees as a “gesture to the Greens” on the back of Immigration Minister Peter Dutton’s attack on the Greens’ asylum-seeker policy.

But, curiously, Labor and the Greens are at war themselves, or at least they are desperately giving the appearance they are. According to Michael Cooney from the Labor thinktank the Chifley Research Centre and Ben Oquist from the Australia Institute, Labor and the Greens have attacked each other because nearly every inner-city seat the Greens have a chance of winning for the first time are Labor-held.

The Greens are also distancing themselves from Labor because they want to capture the anti-politics vote. This is best achieved by showing yourself to be radically different from the major parties.

Labor, on the other hand, is almost forced into attacking the Greens because of the long-run stigma that News Corp papers have attached to any such alliance. During the first days of the election campaign, the Daily Telegraph and The Australian were jumping in with stories that no major party would ever form government with the Greens.

In contrast to the 2013 election campaign, the Tele even had a pro-Labor story “Save Our Albo" over the Greens’ challenge to Anthony Albanese’s inner-city seat of Grayndler.

But nothing much has changed. Back in the 2010 federal election, the The Australian declared the pride with which it had smashed any alliance between the Greens and Labor, and that the Greens:

… should be destroyed at the ballot box.

In October the same year Rupert Murdoch referred to the “bloody Greens” as a party that would ruin Australia’s economic prosperity.

What is clear to the Coalition, Murdoch, and big business in Australia is that Labor and the Greens must be permanently isolated from each other in a sustained ideological crusade. Failing to achieve this would spell nothing short of game over for the Coalition.

The entire crusade, which is based on castigating the Greens as a loony left party that would bring down the Labor Party, requires so much journalistic theatre, compared to what could more easily be done with the Liberal-National Party marriage of convenience. One is a party of agrarian socialists, and the other a party serving mining capital and finance capital. But News Corp has been particularly disciplined at ignoring any of the tensions that these parties have had over the years.

Were Labor to form an alliance with the Greens it could take great leadership on climate. But there are a great many forces arraigned against them achieving a left-progressive coalition.

Whether the Labor Party has the courage to come out and challenge the Coalition to a contest over climate remains to be seen.

The Greens, for their part, are making many more inroads into this election than the last. They certainly have the strongest climate policy, with a renewable energy target of 90% by 2030. The ReachTEL poll referred to earlier shows the Greens have four times the primary vote than the National Party.

The Greens know that for under 30 voters they are already matching the primary vote of the major parties, and that a core platform of strong action against global warming is a big part of this support. Whether the major parties can ignore this support that springs from climate will be one of the biggest gambles of this election.

Coastal management in Australia is subject to competing interests and challenges. These range from land use and strategic planning issues to ecosystems preservation. Local councils are at the coalface as both key decision-makers and the first point of contact for communities.

Exacerbating these day-to-day challenges for councils are risks to property. A quantitative assessment undertaken by the then-Department of Climate Change in 2009 identified impacts of sea-level rise as a serious threat to property.

In New South Wales, under scenarios of a 1.1-metre sea-level rise, risks of damage or inundation to residential housing alone affected tens of thousands of properties, potentially costing millions of dollars. The NSW 2009 sea-level rise policy (now repealed) saw coastal councils considering this future risk when developing coastal zone management plans.

These metrics, while important, say little of the wide-ranging benefits of a freely accessible coast. Going to the beach is a fundamental part of Australian identity; it’s a “special place” for Australians.

Local councils are most exposed to the issues and challenges of a changing coastline in which there are many interests. Councils are often the first decision-makers for local development, asset management and land-use and strategic planning. Increased coastal erosion, storm events, more frequent and severe flooding impacts and higher tides can and will make these regular functions of councils more complicated.

In this context, the tabling of the NSW Coastal Management Bill on May 3 marks the formalisation of Stage 2 of the most significant law reform to coastal management since the 1970s. The NSW state government says that, by better integrating coastal management with land-use planning, the legislation offers:

… a modern, coherent coastal management framework that is responsive to current needs and future challenges.

Property rights hold sway

Despite a prominent focus on property values when it comes to coastal management issues, including climate adaptation, evidence is emerging that residents are attached to their property for more than financial reasons.

Private property interests often take priority as councils attempt to balance competing interests. An example of this is ongoing litigation over a sandbag wall on Belongil Beach in Byron Bay.

With coastal defences failing, some councils are moving to policies of ‘planned retreat’. Wikimedia Commons/Paul Sequeira, US EPA

After a series of severe coastal storms in the 1970s, Byron Shire Council adopted a policy of “planned retreat”. The location of this small northern NSW community on the most easterly point of Australia means it is already exposed to coastal hazards. These will become more frequent and more severe under future climate scenarios.

The planned retreat policy set requirements for the future relocation of private property. Local property owners, particularly those with beachfront property, have vehemently opposed the use of the policy to prevent coastal property protection.

In May 2009, a particularly severe coastal storm caused significant damage to private residential property and the beach. Beachfront property owners (the Vaughans) sought to reinstate council-approved sandbag protection works on their property. This sandbag wall had collapsed during the storm.

The Vaughans sued the council and the council sued the Vaughans. This particular matter settled in February 2010 and the failed sandbag wall has been reinstated.

More recently, council plans to install a permanent rock wall at the same location ran into fierce opposition from the community, for whom the public amenity of the beach is critical, and legal challenges.

This example highlights some critical aspects of coastal management:

• private property rights are deeply entrenched in Australian culture and legal systems

• climate adaptation is easier when it comes to future development

• recourse to litigation in protecting your property is much easier if you can afford it.

Climate adaptation planning, including planned retreat, can be more easily implemented for future development. There are excellent examples of local government in NSW providing landowners with a range of development options.

NSW reforms weigh future risks

Much of the coast of Australia, however, is already developed. The residential development includes affordable housing options. To balance competing interests along the coast, all members of coastal communities must be considered.

To this end, the NSW bill, if passed, would lead to a new Coastal Management Act, a new Coastal Management State Environmental Planning Policy and a coastal management manual. Together these advance a more forward-thinking coastal management response. This has a central focus on ecologically sustainable development that can better balance both the management of coastal hazards and the integrity of the coast.

Local councils will be responsible for implementing these new legal requirements. Under Part 3 of the Coastal Management Bill, councils will be required to monitor coastal hazards and to give effect to coastal management plans. It would appear this includes future sea-level rise.

As has been advocated in numerous policy reports, the councils can’t do this alone. They need assistance from the federal government as well as the state.

Tayanah O'Donnell undertakes research with the University of Canberra funded by the National Climate Change Adaptation Research Facility and the ACT Government. She also the principal of PlaceAdapt Consulting.

Kangaroos are much lighter on the land than sheep and cows. Kangaroo image from www.shutterstock.com

We may be what we eat, but our dietary choices also affect the health of the environment, and farmers' back pockets.

Energy and water use, native habitat cut down for crops and grazing, and emissions that exacerbate climate change, are just some of the profound effects agriculture has on Earth. And, there are more and more mouths to feed.

Perversely, both starvation and obesity are severe health issues across the world. With agriculture confronted by economic and environmental uncertainties, society faces enormous challenges.

But challenges also offer great opportunities. Drastically rethinking what we eat, and where and how food is produced, could help our health, the planet, and our farming businesses.

That means eating fewer sheep and cows, and more kangaroos, feral animals, and insects.

Unsustainable farming

Australia’s rangelands - the drier regions of the country predominantly used for livestock and grazing - cover about 80% of the country. They are often in poor condition and economically unviable. In part, this is due to the fact we still farm many animals, mostly in ways that are unsuited to the Australian climate and environment.

Hard-hoofed animals contribute to soil compaction and erosion, and have even been linked to the spread of the invasive cane toad. But the environmental impact of intensive stock farming extends much further.

Continuing to farm using a European-derived, intensive system is a recipe for land degradation and environmental collapse, especially with the compounding impacts of climate change (severe weather events, more frequent and intense droughts, and fires).

Starving stock in Julia Creek, Qld (1952). Queensland State Archives, Digital Image ID 4413

Past and current agricultural practices have also profoundly altered our environment. It may be impossible to restore these lands to their original condition, so we must learn to operate in the new environment we’ve created.

More broadly, many experts have identified our meat consumption and intensive farming as a significant driver of global problems.

Treading lightly

To address these issues, we need a cultural shift away from intensive agriculture. The days of riding and relying on the sheep’s back, cattle’s hoof, or the more recent, and increasingly popular, chicken’s wing, may need to pass.

Native wildlife and some feral animals tread more lightly on the environment than intensively produced livestock do, and thus provide more sustainable options for food production on Australia’s arid lands. Kangaroos and goats place one-third of the pressure on grazing lands compared with sheep.

We already eat some of these animals, but could arguably eat more of them, including feral goats, camels, deer, rabbits, pigs, and buffalo, as well as native emus and kangaroos.

Camels are already on the menu. Camel image from www.shutterstock.com

Yet more extreme proposals could include feral donkeys, cats, horses; and even cane toads. Horses are already consumed in Europe and cats in central Australia.

Eating more feral and native animals, and relying less on chicken, sheep, domestic pigs, and cattle would help meet ethical concerns too. Wild animals such as kangaroos are killed quickly, without the extended stress associated with industrialised farming, containment, and transportation to abattoirs.

And by harvesting sometimes overabundant wild native animals (such as kangaroos) and feral species, we may be able to reduce their impacts on ecosystems, which include overgrazing and damage to waterways.

An even greater leap would be to eat fewer four-limbed animals and more six-legged creatures. Insects are often high in protein and low in fat, and can be produced in large numbers, efficiently and quickly. They are already consumed in large numbers in some regions, including Asia.

Evidence that a market for such a food revolution exists is that shops are already popping up selling mealworm flour, ant seasoning salt, and cricket protein powder, among other delicacies.

A six-legged diet is even better. Insect image from www.shutterstock.com Boom and bust

Thanks to Australia’s variable climate, swinging between drought and flood, many farms are also tied to a boom-and-bust cycle of debt and credit.

As the climate becomes increasingly unpredictable, this economic strategy must be detrimental to the farmers, and is shown by many farm buy-backs or sell-offs.

It makes sense to use species that are naturally more resilient and able to respond to boom-and-bust cycles. Kangaroos and other species can forage on our ancient and typically nutrient-poor soils without the need for nutritional supplements (such as salt licks), and are physiologically more efficient at conserving water. This could lead to a more sustainable supply of food and income for farmers, without the dizzying economic highs but also without the inevitable prolonged and despairing lows.

Future-proofing

To be clear, we are not suggesting completely replacing livestock, but diversifying and tailoring enterprises to better suit Australia’s environment.

To support more diverse agricultural enterprises we will need to overcome many obstacles, such as licences to hunt, what we’re comfortable consuming, and land use regulation. But we shouldn’t shy away from these challenges. There are tremendous opportunities for rural, regional and Indigenous communities, and indeed cities too.

We need a more diverse mix of meat to adapt to the pressures of a growing population and climate change. Supermarket aisles that display beef, chicken, pork and lamb, alongside kangaroo, camel, deer, goat, and insects, could be just what the environmental, health and economic doctors ordered.

Euan Ritchie is affiliated with the Ecological Society of Australia and the Australian Mammal Society.

Adam Munn has previously received funding from the Australian Research Council and National Geographic Society. Adam Munn has been associated with projects recieving funding from Meat and Livestock Australia. Adam Munn is a member of the Australian Mammal Society and the Australian and New Zealand Society for Comparative Physiology and Biochemistry.

Rock climber Alex Honnold argues we must do more to defend US national parks from a slew of imminent environmental threats

Just over eight years ago, I completed a free solo ascent – unroped – of the one of the most beautiful and challenging climbs in the world: a 350 metre crack called Moonlight Buttress in southwestern Utah’s Zion national park. At the time, Alpinist magazine called it “one of the most impressive free solos ever achieved.”

While I find it hard to articulate exactly why I’m drawn to this type of exposed, unroped climbing, the setting certainly plays a big role. Zion is aptly named: it’s a promised land of striking multicolored sandstone cliffs soaring from a green valley below. Though I’m intensely focused when I climb, the gift of doing it in such breathtaking places is not lost on me.

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Public bathing in geo-thermally heated pools is a recently developed tradition in Iceland.

A gigantic fuel tank, originally built for NASA's space shuttle programme, is making a slow journey through the streets of Los Angeles to its new home.

From 3-15 May, thousands of young people around the world took part in civil disobedience on six continents, calling for oil, coal and gas to be kept in the ground. Anna Pérez Català from Climate Tracker shares some of her favourite pictures from the Break Free protests.

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They have been dubbed the killer invaders that target bees and have even caused the deaths of several people in France, but has the deadly Asian hornet made it to the UK?

As Harmony of the Seas sets sail from Southampton docks on Sunday she will leave behind a trail of pollution – a toxic problem that is growing as the cruise industry and its ships get ever bigger

When the gargantuan Harmony of the Seas slips out of Southampton docks on Sunday afternoon on its first commercial voyage, the 16-deck-high floating city will switch off its auxiliary engines, fire up its three giant diesels and head to the open sea.

But while the 6,780 passengers and 2,100 crew on the largest cruise ship in the world wave goodbye to England, many people left behind in Southampton say they will be glad to see it go. They complain that air pollution from such nautical behemoths is getting worse every year as cruising becomes the fastest growing sector of the mass tourism industry and as ships get bigger and bigger.

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Twenty-seven km offshore from Cairns in Far North Queensland, experiments are conducted 18m under the sea.

A fleeing giraffe, a sleeping racoon and a close encounter with a great white shark are among this week’s pick of images from the natural world

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They’ve been called ‘the beast of destruction’ and ‘the abortion issue of wildlife’, but efforts to save the wolf’s population – and perception – are worth celebrating

Some species are eliminated through sheer human carelessness, as we clumsily attempt to mould the world in our image. America’s gray wolf, on the other hand, was almost gleefully wiped out, exterminated with a visceral mixture of disgust and fear.

Related: Wolf population reaches new high at Yellowstone park

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