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NZ's geothermal wells offer a cheap way of storing carbon permanently — equivalent to taking 600,000 cars off the road
theconversation.com NZ’s geothermal wells offer a cheap way of storing carbon permanently – equivalent to taking 600,000 cars off the road

Most technologies for CO₂ removal are expensive. But New Zealand could be doing this cheaper than other countries, taking advantage of existing geothermal and forestry industries.

NZ’s geothermal wells offer a cheap way of storing carbon permanently – equivalent to taking 600,000 cars off the road

These researchers from Canterbury University have come up with an idea that they say can cheaply remove 3 million tonnes of CO₂ from the air each year. And it utilises existing infrastructure.

The TLDR is that geothermal water contains CO₂, and the stations here have systems that capture and dissolve that CO₂ into the water before it's reinjected. This CO₂ rich water is heavier than the surrounding water, so it sinks to the bottom.

The heat from geothermal wells is not replenished at the speed it's taken by the stations, so eventually the water coming out isn't hot enough and new wells need to be drilled.

The scientists are suggesting that instead of simply drilling a new wells, we burn biomass from forestry to heat the warm water up the last bit. The carbon in this fuel has been gathered by the trees, and if it was released into the atmosphere it would be carbon neutral. But if you use the station's existing CO₂ capture and dissolve systems, the carbon goes underground permanently. The operation becomes a carbon sink that also enables the use of geothermal energy that would otherwise be unusable.

They say, "in terms of buying ourselves out of an emissions liability, geothermal carbon removal is one of the cheapest options out there." They compare it with the cost of switching from a petrol to electric car - US$700 for each tonne of CO₂ saved. With the existing infrastructure, they say their plan would remove CO₂ at a cost of about US$55 a tonne.

Their papers and a bunch more evidence and info is linked in the article.

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'We know we need to do better': Corrections CEO responds to damning report
www.rnz.co.nz 'We know we need to do better': Corrections CEO responds to damning report

The report has given the Department of Corrections "real pause for thought", its chief executive says.

'We know we need to do better': Corrections CEO responds to damning report
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Fresh bids and bad blood in battle for the fringe right vote
thespinoff.co.nz Fresh bids and bad blood in battle for the fringe right vote

An increasingly crowded field of parties are competing to harness the vestigial energy of the parliamentary occupation.

Fresh bids and bad blood in battle for the fringe right vote

>An increasingly crowded field of parties are competing to harness the vestigial energy of the parliamentary occupation.

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Liz Gunn launches new political party, asks for $1m in donations
www.nzherald.co.nz Liz Gunn launches new political party, asks for $1m in donations

The former TV presenter turned anti-vaccination campaigner wants to get into politics.

Liz Gunn launches new political party, asks for $1m in donations

>Former TV presenter turned anti-vaccination campaigner Liz Gunn has launched a new political party, asking people to donate up to $1 million.

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Government moves forward on coal technology restrictions
www.rnz.co.nz Government moves forward on coal technology restrictions

The government is following through on a promised ban on new coal boilers, and phasing out existing ones by 2037.

Government moves forward on coal technology restrictions

>The government is following through on a promised ban on new coal boilers, and phasing out existing ones by 2037. > >Other changes announced yesterday include new standards requiring councils to factor in climate change in decisions about consents for furnaces that burn fossil fuels. > >Currently more than half of the heat used to process raw material - for example in dairy and paper production - comes from burning fossil fuels. > >It accounts for 8 percent of New Zealand's greenhouse gas emissions. > >Energy and Resources Minister Dr Megan Woods said the changes would reduce emissions equivalent to the exhaust fumes from 100,000 cars a year. [...] > >The ban on installing new coal heating devices kicks in from late next month, with the new nationally consistent standards for councils ready for implementation before the end of the year.

The new standards only cover devices used to generate heat for industrial processes.

Stuff had a related story this morning about the last coke-powered foundry in NZ shutting down.

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Icon vote

I want to finally get an icon up for !newzealand , but I want you to decide between these two.

The icon will show up as a circle in some places and a square in others. Both could have some small tweaks if they're chosen.

Vote on the comments. Best score at 10pm Thursday will be the icon.

EDIT: Well that was pretty clear. The kiwi it is. Thanks to @sortofblue@lemmy.nz for the suggestion.

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Offline Topographic Maps
  • OK, cool. What does the little download button that shows up when you zoom in do?

  • Academics investigate bias in our Chinese-language media
    www.newsroom.co.nz Academics investigate bias in our Chinese-language media

    Analysis: An opinion piece appeared to contain emotionally-charged calls to side with China on criticism of human rights abuses, and a front-page article encouraged readers to vote for a candidate.

    Academics investigate bias in our Chinese-language media

    In an analysis, academics recently found several cases of pro-CCP and pro-NZ-National-Party bias in NZ Chinese-language media. It’s long been known that China interferes in Chinese-language media here.

    Interestingly, it appears the CCP and NZ Chinese-language media are currently putting their weight behind National MP Nancy Lu. She was secretly “trained as a candidate” by former National MP Jian Yang, according to a statement made by Yang in 2020. Notably, Yang used to train spies for the People’s Liberation Army before he came to NZ, and left parliament after intelligence agencies flagged him over his relationship with the CCP.

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    Offline Topographic Maps
  • Thanks for making and sharing this. I know I'll use it. I keep discovering features. I'm glad you've got the Basemaps imagery on there.

    In terms of offline use, does it keep low-res tiles of the whole country for offline use, with the option to download individual tiles when you're zoomed in? That's how it seems to work.

  • Government announces $128m bailout for universities but major job losses and cuts still likely

    @Dave@lemmy.nz @SamC@lemmy.nz already posted about this yesterday, but there's been heaps more coverage of this story. This was yesterday:

    Plus a few press releases:

    But by the end of the day yesterday and this morning, stories were coming out saying major job cuts will probably still go ahead:

    And last Friday, before the funding was announced, The Spinoff ran a list of which university courses were likely to be dropped

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    Aucklanders: How to make sure you receive your electricity dividend
    www.stuff.co.nz Aucklanders: How to make sure you receive your electricity dividend

    Aucklanders whose power is supplied by Vector owner, Entrust, could be in for a timely cash boost – if they remember to update payment details.

    Aucklanders: How to make sure you receive your electricity dividend
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    'We've been played'. Locals' fury as 'jewel in the crown' marine reserve stalled
    www.stuff.co.nz 'We've been played'. Locals' fury as 'jewel in the crown' marine reserve stalled

    Frustrated conservationists say DOC is making ocean protection impossible, after iwi stall fourth sanctuary.

    'We've been played'. Locals' fury as 'jewel in the crown' marine reserve stalled

    The Hākaimangō-Matiatia​ marine reserve would cover a 2350ha area northwest of Waiheke Island, but it's been stalled after opposition from the Ngāti Pāoa Iwi Trust. However, the Ngāti Pāoa Trust Board supports the reserve. This is the fourth marine reserve to be delayed or cancelled recently after opposition from iwi groups.

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    National boasts huge funding advantage in election
    www.1news.co.nz National boasts huge funding advantage in election

    While the polls are tight, the opposition has one huge advantage - money.

    National boasts huge funding advantage in election

    National received more than 12 times the money Labour did in large donations over the past year

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    Cuts and job losses at Auckland Transport ‘across the board’
    www.newsroom.co.nz Cuts and job losses at Auckland Transport ‘across the board’

    Auckland Transport’s executives say there are “no easy choices” in what services get the chop in the face of funding constraints

    Cuts and job losses at Auckland Transport ‘across the board’
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    [Megathread] Chris Hipkins in China

    Sat 1 July, 3:00 pm

    I'm stopping now and will unpin this soon. Hipkins is back, coverage is winding down, and I'm not keeping up with it anyway. Here are the final stories:

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    Thu 29 June, 11:30 pm

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    Thu 29 June, 11:30 am

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    Wed 28 June, 10:30 pm

    Update 29 June 1:20pm: Added Beehive press releases

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    Wed 28 June, 1:15 pm and earlier in comments due to character limit

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    'They think you're committing fraud': Trans refugees in NZ need usable ID
    www.renews.co.nz 'They think you're committing fraud': Trans refugees in NZ need usable ID

    While New Zealand’s new self-identification process is great news for many transgender, intersex, nonbinary and takatāpui people, the move is being seen as a step backwards for those not born in Aotearoa.

    'They think you're committing fraud': Trans refugees in NZ need usable ID

    This is about the new self-identification process that the DIA launched last week on the 15th, which makes it easier for people born in New Zealand to amend their registered sex on their birth certificate. They have removed the previous requirements of a trip to the Family Court and proof of medical treatment. It also now allows applicants to amend their registered sex to non-binary.

    However, there's still not a solution for those born overseas. The DIA is working on something, but it will likely not apply to asylum seekers until they're accepted as refugees - which often takes many years. In the meantime, the mismatched name issue makes it very difficult for these people to get things like a bank account, an IRD number, a job, benefits, medication, etc. Which puts a lot of roadblocks in the way of these people becoming productive, happy, healthy members of our society.

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    'Ineffective, expensive, inequitable' - expert on Nats' crime policy
    www.1news.co.nz 'Ineffective, expensive, inequitable' - expert on Nats' crime policy

    AUT law dean and parole board member Khylee Quince said National's announcement "is fear-mongering".

    'Ineffective, expensive, inequitable' - expert on Nats' crime policy

    "AUT law dean and parole board member Khylee Quince said National was proposing 'retrograde' steps."

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    Microdosing mushrooms helped NZ woman beat alcoholism
    www.stuff.co.nz Microdosing mushrooms helped woman beat alcoholism

    A University of Auckland researcher is investigating what Kiwi microdosers are consuming and the effects they’re experiencing.

    Microdosing mushrooms helped woman beat alcoholism
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    RaoulDuke RaoulDuke @lemmy.nz
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