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Huge swells and strong winds batter the New South Wales coastline in Australia, causing flooding and dangerous conditions in Sydney and the surrounding areas. Evacuation notices have been issued in areas including Lismore, the Cooks River and Chipping Norton amid heavy rainfall, with the stormy conditions set to continue into Monday

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AAP/Paul Miller

With an unprecedented storm flooding large population centres on Australia’s east coast over the weekend, you would be forgiven for thinking politicians on the campaign trail might pause to reflect on climate change.

On the other side of the world, France and much of west and northern Europe are also experiencing extensive floods. They are unprecedented in the speed at which they have deluged cities and communities.

Climate change did not overdetermine these floods in Australia and Europe. But, it has super-charged their intensity and speed in a way that would make them rare in the past.

The weather patterns are complex, but the climate change part of the science is less so. Every 1℃ increase in global average temperature means the atmosphere can hold 7% more water vapour. This means that when moist air condenses into rainfall, it is capable of coming down for much longer and in much greater volume than it did in pre-industrial times.

Climate change is not about some kind of linear increase in temperature. It is about an increase in energy in the climate system that produces extremes – in drought, storms, wind, heatwaves and floods. Floods are just one of the expressions of the violence of the excess energy.

Analysis from the Potsdam Institute for Climate Impact Research, published last year and reported in the New York Times, showed record-breaking rainfall has increased 12% from 1980 to 2010 compared to the previous 80 years. In Europe, the increase was 31%. This is because the northern hemisphere temperature anomalies are so much greater than the south.

In France, the floods are getting attention as they are affecting globally recognised public treasures such as artwork at the Louvre and Musee d’Orsay. Paris hasn’t experienced a flood of this magnitude in more than 30 years, and certainly not one that has accumulated at the speed of this one.

This has moved French President Francois Hollande to link the flood to climate change, only six months after the climate summit held in Paris last December.

But, in Australia, at the midway point of an election campaign, the leaders of the major parties failed to mention our floods. Malcolm Turnbull aired the hang-up he shares with Bill Shorten about avoiding a hung parliament to shore up their own political power.

Ironically, a hung parliament might lead to power-sharing with the one party likely to drive effective action on climate – the Greens.

The Great Barrier Reef visits Australian voters

At a time when some are “reef-stricken” about the pending loss of coral at one of the world’s greatest natural wonders, many are oblivious to the seriousness of the bleaching process. While Environment Minister Greg Hunt would like to take credit for management of the Great Barrier Reef, the greatest palpable threat to the reef is warming sea-surface temperatures.

Just days after it was revealed the Australian government had lobbied for the removal of an entire chapter on the reef from a UN report, Hunt applauded his own management of the reef.

With the current floods, we are now seeing the hangover from the record sea surface temperatures that emerged in the last six months. This has devastated 93% of the reef.

But the leaders appear to be afraid of any kind of contest, let alone one on climate change. Last week’s highly scripted leaders’ debate largely dodged climate change, despite persistent questioning from Financial Review journalist Laura Tingle.

There is a growing indication that voters are taking extreme weather into their deliberations around climate policy. Even though mainstream media is notoriously bad at linking extreme weather to climate change, which is taboo for many Coalition MP’s, voters make this link themselves simply by experiencing it on an ever-more regular basis.

Even Deputy Prime Minister Barnaby Joyce, one of the eight-member kill-the-carbon-tax group that met every week in Cory Bernardi’s office, is having second thoughts. A feature article in the Sydney Morning Herald had him questioning his faith in Coalition groupthink.

After visiting his parents parched landholding in Rutherglen, Joyce declared:

I start to wonder whether climate change might really be happening.

This phenomena is an example of what 350.org founder Bill McKibben said at the end of what he regarded as a failed climate summit in Paris. Without an effective agreement, there is only one negotiation that remains: with physics itself. And physics actually holds all the cards.

As voters confront the physics or – put another way – extreme weather visits upon us, climate change becomes depoliticised.

But, in ignoring the physics, the cowardly climate stance that the major party leaders have taken is likely to backfire. Both leaders set out from the position that climate change has become so politicised that swinging voters are more likely to change their voter intention on other issues such as “jobs and growth”, education and hospitals.

A telling statistic here comes from three weeks of data collected by the ABC’s Vote Compass. 63% of the 250,000 respondents now want to see a price on carbon in Australia, compared to 50% in 2013.

But, more significantly, the shift was most marked in Coalition voters. There is a 13% increase in those wanting a price on carbon (41% agree, 22% are neutral).

These figures have prompted former Liberal leader John Hewson to challenge the idea that the Coalition’s 2013 campaign to “axe the tax” won it the last election.

As the Mona Lisa makes its way to higher ground, and Australians are asked to stay indoors across four states, the reality of climate change continues to assert itself. While they may be in denial, politicians cannot dismiss climate change as an issue that comes and goes. It is here to stay for today’s voters and for every election to come.

The cruise line industry is booming. The bigger the boats, the larger the profits. But what, if any, are the engineering and environmental limits?

The cruise line industry is booming. The bigger the boats, the larger the profits. But what, if any, are the engineering and environmental limits?

David Cameron and Boris Johnson clash over the impact of the EU on the UK's fishing industry, during an interview with the BBC's Countryfile programme.

Campaigners hope the Thai temple raid will stir the world’s conscience – but the trafficking of tiger parts to China is a booming business

A week ago it cost 600 baht (£11.50) to visit the tiger temple in Thailand’s Kanchanaburi province, west of the capital, Bangkok. Tourists moved by the spectacle of such splendid creatures living side by side with human beings could also pay the saffron-robed Buddhist monks an extra £15 to help feed the cubs, or to have their picture taken with an adult tiger’s head resting on their lap.

Along with nearly 250,000 people, Jay Z, Beyoncé and their daughter Blue Ivy posed with the animals last year, and marvelled that some of the world’s fiercest creatures could be so tame.

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The Flint disaster and other cities’ ‘cheating’ called criminal in nature by some, but scientists believe the remedies are fairly straightforward

A tragedy of widespread testing failures in US drinking water is that experts believe the remedies are fairly straightforward – if there is political will.

As the Guardian has revealed, at least 33 cities across 17 states have used water testing methods that regulators and experts have said may inaccurately reduce lead levels found in tests.

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Russell Reichelt says he has no problem with environmental lobbyists portraying the seriousness of the damage but a lot of the reef remains unscathed

The chairman of the Great Barrier Reef Marine Park Authority, Russell Reichelt, has played down a report that said he accused activist scientists and lobby groups of distorting maps and data to misrepresent the extent of coral bleaching on the reef.

The authority withdrew from a joint announcement from the national coral bleaching taskforce about the extent of coral bleaching earlier in the week because Reichtel believed maps accompanying the research did not depict the full picture.

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Trawsfynydd, Gwynedd, Wales They are constantly in motion, dancing out of the gorge in undulating flight

Pont y Llyn Du on the Afon Gain, in the lonely moors east of Trawsfynydd, above the old gold mines at Gwynfynydd, is one of those places at which you’d never arrive except by design. It’s one of my favourite haunts in the Welsh hills.

The peaty hill stream rushes down through a miniature rocky gorge under the old humped bridge to debouch into a round pool of amber depth, encircled by green pastures. You can traverse through on rock ledges beneath the arch, plunge into the pool if you’re hardy and of the “wild swimming” persuasion. What most appeals to me are the spirits of the place.

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China is taking up renewable energy faster than any other country. It’s all on display in the Solar Valley.

Millions of shorebirds fly between Australasia and the Arctic every year. They navigate over oceans using stars and magnetic fields, they sleep with half their brain at a time while they're on the wing. But for some of them, this will be the last flight.

As Winter bites in the south, Tim Entwisle and Matthew Crawford investigate a late start to the north's dry season, birds that spread fire, a collision of accountancy and botany, and a warmer future for our only Winter-hibernating marsupial.

Four-year package, to be announced by Adam Bandt on Saturday, will allow the ventures to generate tax-free profits from the electricity created

The Greens will announce that they will spend $265.2m on community-owned renewable energy projects, including allowing these to generate tax-free profits from the electricity created.

The Greens energy spokesman, Adam Bandt, will announce the four-year package on Saturday in North Fitzroy at an apartment block seeking to establish a community-owned renewable project.

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This week fabulous fungi in the Tarkine wilderness; Fish Creek hosts a tea cosy festival; Nathan Griggs makes a monster whip for a world record attempt; and success for an indigenous working scheme in the Kimberley.

Environmental crime is now the world’s fourth biggest crime and is a growing threat to security and natural resources, say UN and Interpol

The value of the black market industry behind crimes such as ivory smuggling, illegal logging and toxic waste dumping has jumped by 26% since 2014 to between $91bn (£62bn) and $258bn, according to an assessment by the UN and Interpol.

Environmental crime is now the world’s fourth largest illicit enterprise after drug smuggling, counterfeiting and human trafficking and has outstripped the illegal trade in small arms.

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If implemented, weakened proposal means 14,000 people could die prematurely across Europe each year from 2030

EU states have agreed to water down a proposed law aimed at halving the number of deaths from air pollution within 15 years, after intense lobbying from the UK that cross-party MEPs have condemned as “appalling”.

Some 14,000 people will die prematurely every year across Europe from 2030 as a result, if the weakened proposal is implemented, according to figures cited by the environment commissioner, Karmenu Vella.

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Residents voice their fears as the water level of the Seine river in Paris continues to rise. Officials forecast the Seine could peak at 6.5 metres, its highest level for more than 30 years in central Paris, stressing this is still well below the level at which it would threaten residents and businesses. Photograph: Philippe Wojazer/Reuters

• Europe floods: Seine could peak at 6.5 metres as Louvre closes doors
  
• Sinkholes and landslides follow flooding in France and Germany – video

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We’re halfway through the year with the month of June and we’d like to see your photos of the June wildlife near you

The southern hemisphere approaches winter during the month of June while the northern hemisphere basks in warm, sunny weather. So what sort of wildlife will we all discover on our doorsteps? We’d like to see your photos of the June wildlife near you.

Share your photos and videos with us and we’ll feature our favourites on the Guardian site.

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We asked you to share your May pictures of the wildlife around the world wherever you are. Here’s a selection of our favourites

• You can add your June wildlife photographs by clicking on the ‘Contribute’ button below

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Fighting snakes, a rare sand cat family and Belgium’s newborn giant panda are among this week’s pick of images from the natural world

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