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John Mann

@jm493.bsky.social

Melbourne, Australia Born 313 ppm CO2 Interested in - Renewables energy transition - Slide rules and other old technology - Linux and network automation - Quality political representation - Christmas Lights Previously jm493_au on Twitter

2,125 Followers  |  842 Following  |  373 Posts  |  Joined: 18.11.2023
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Posts by John Mann (@jm493.bsky.social)

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Israel is currently bombing Palestinians sheltering in tents in the Gaza kill box, @albomp.bsky.social @senatorwong.bsky.social.

Why are you still pretending there's a ceasefire?

Why are you not condemning Israel's genocide?

Why are you not meeting your obligations under international law?

WHY!

31.01.2026 21:41 β€” πŸ‘ 104    πŸ” 58    πŸ’¬ 6    πŸ“Œ 3
Honest Government Ad | Australien Values
YouTube video by thejuicemedia Honest Government Ad | Australien Values

Sussan Ley: New arrivals should have "Australian values"

Liberal and National party "Australian values" detailed for you by The Juice Media in 2021. πŸ‘‡πŸ»

🚨 Content warning: references to sexual assault. #auspol
youtu.be/AqNdKtahx58

20.11.2025 01:33 β€” πŸ‘ 64    πŸ” 29    πŸ’¬ 3    πŸ“Œ 1

πŸ§ͺ #resistrfk #defendresearch #standupforscience #RFKJr #Vaccines #HHS #CDC #antivax
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31.10.2025 01:51 β€” πŸ‘ 26    πŸ” 14    πŸ’¬ 1    πŸ“Œ 0
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Are Carbon Offsets Fixable? This article provides a systematic review of the literature on carbon offsets. A growing number of studies have found that the most widely used offset programs continue to greatly overestimate their p...

You can't fix offsets, because they're not really broken

They are designed from the ground up as a way for polluters to falsify climate action, and for disgustingly rich bankers to divert funds away from frontline communities

As long as fossil fuels exist, offsets will exist

Good paper! -->>>

07.10.2025 11:31 β€” πŸ‘ 195    πŸ” 69    πŸ’¬ 6    πŸ“Œ 4
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Pollutting now and cleaning up later is not a viable strategy: Direct Air Capture (DAC) is hitting a hard reality check.

Costs are falling much slower than anticipated, casting doubts on the nascent technique’s role in tackling climate change.

28.09.2025 08:10 β€” πŸ‘ 706    πŸ” 188    πŸ’¬ 62    πŸ“Œ 15
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Bowen says political environment may prevent 2035 emissions target becoming law The climate change minister says he will have to assess whether legislating the government's 2035 emissions target is politically feasible, with the major waypoint towards net zero due to be announced...

In 2022, with a two seat majority, the Albanese government legislated our first climate targets.

In 2025, with a supermajority, it’s claiming it lacks political support to update those targets.

It’s time for transparency about climate risk and our climate targets.
www.abc.net.au/news/2025-09...

03.09.2025 22:27 β€” πŸ‘ 133    πŸ” 58    πŸ’¬ 8    πŸ“Œ 3

If Germany hadn't decided to shutdown nuclear power
- they wouldn't have worked so hard getting solar down the cost curve
- people in all countries wouldn't be benefiting from cheap solar

- Germany would have remained nuclear+fossil
[ Germany now burns less coal than at any time they had nuclear ]

03.09.2025 22:28 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Call on the Government to set the strongest possible 2035 climate target - and take urgent action to meet it | Climate Council If you believe the Government must go further and faster to protect Australians and slash climate pollution by 2035 - please add your name today.

www.climatecouncil.org.au/actions/peti...

26.08.2025 06:29 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I genuinely believe that we as a society have made a big mistake by not *constantly* calling Donald Trump stupid. That actual fucking word. None of this pussyfooting with strongly implying - we need to use ths word stupid because Donald Trump is the stupidest motherfucker on the planet.

19.08.2025 19:35 β€” πŸ‘ 122    πŸ” 12    πŸ’¬ 11    πŸ“Œ 0
A disassembled Halo 3C smoke and vape detector found to include microphones. Courtesy of Reynaldo Vasquez-Garcia and Nyx

A disassembled Halo 3C smoke and vape detector found to include microphones. Courtesy of Reynaldo Vasquez-Garcia and Nyx

Try e.g. archive.vn/7oaZ8
Looks like it has a Raspberry Pi Compute Module 4 (CM4) inside.
No wonder they aren't cheap.

09.08.2025 00:09 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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When you strip away humanity

26.07.2025 11:31 β€” πŸ‘ 19223    πŸ” 8058    πŸ’¬ 522    πŸ“Œ 951

Electrification isn’t new. It has been transforming global energy use for over a century.

Here is the history of electrification in six moments and today’s defining 🧡

1/10

26.07.2025 11:00 β€” πŸ‘ 35    πŸ” 11    πŸ’¬ 1    πŸ“Œ 2

Narrator: In the past, lots of people did die due to things that we now know are preventable.

27.07.2025 03:01 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

MORNING AUSTRALIA

I found a fun and frightful little chart buried in the government's own data, revealing that even they expect domestic gas consumption to never return to its glory days

THE GAS SHORTAGE IS A BIG LIE USED TO JUSTIFY EASING APPROVALS = SUBSIDIES FOR HUGE NEW FF PROJECTS

25.07.2025 23:30 β€” πŸ‘ 103    πŸ” 42    πŸ’¬ 2    πŸ“Œ 2
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Museo degli Strumenti per il Calcolo (2025) - All You Need to Know BEFORE You Go (with Reviews) Most Recent: Reviews ordered by most recent publish date in descending order.

Your link helped me find
Museum of Computing Instruments www.msc.sma.unipi.it
πŸ˜€

21.07.2025 00:11 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

Faark ... that's nearly AUD$25,000/kW of installed capacity.

No, really, faark.

And you haven't paid to run it yet, insured the site disaster risk (that is commercially impossible), even bought the fuel, or sorted the waste disposal (how?), or npv'd the eventual decommissioning cost.

Faark.

20.07.2025 08:45 β€” πŸ‘ 28    πŸ” 13    πŸ’¬ 2    πŸ“Œ 0

Thanks. We are visiting Lucca in May next year, so visiting Florence is definitely possible.πŸ˜€
Any other suggestions for interesting technology sites to visit in Tuscany?

20.07.2025 11:43 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Yes. *Resilience* is just as important as reliability.
When some things do go wrong (as they eventually will), it's essential to have the equipment, procedures and settings all working together to prevent the problem propagating - and maintain services for all/most customers.

18.07.2025 12:15 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Climate fatalism is just as wrong as climate denial β€” it's never 'too late' for change Veteran environmentalist David Suzuki believes the time has passed us to stop climate change. He's wrong.

Well-said, @ketanjoshi.co.

Fatalism supports apathy and leads to deeper failure. I’ll pass, David.

www.crikey.com.au/2025/07/14/c...

16.07.2025 06:31 β€” πŸ‘ 111    πŸ” 33    πŸ’¬ 9    πŸ“Œ 0
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Climate fatalism is just as wrong as climate denial β€” it's never 'too late' for change Veteran environmentalist David Suzuki believes the time has passed us to stop climate change. He's wrong.

I liked this comment.
Snips:
"actions and decisions made now can make that change greater or lesser"
"[The debate] is about PR, social psychology, economics, social movements, politics, and campaign strategies."
www.crikey.com.au/2025/07/14/c...

16.07.2025 21:42 β€” πŸ‘ 4    πŸ” 3    πŸ’¬ 2    πŸ“Œ 0
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The lights have stayed on in Australia, even as more wind and solar is added to the grid Australia’s uniquely isolated and massive power grid has seen massive renewable energy growth while maintaining world-leading levels of reliability.

Australia’s uniquely isolated and massive power grid has seen massive renewable energy growth while maintaining world-leading levels of reliability.

11.07.2025 06:23 β€” πŸ‘ 57    πŸ” 25    πŸ’¬ 0    πŸ“Œ 1

A reminder: this is what's fuelling Elon Musk's racist text generation software over on the white supremacist website that major institutions can't stop using

09.07.2025 05:12 β€” πŸ‘ 2342    πŸ” 1040    πŸ’¬ 16    πŸ“Œ 10

I knew one small US tech startup where they couldn't get a health plan to cover the company's employees because the Founder and CEO had Crohn's disease (gastric ulcers).

07.07.2025 07:13 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Wins: Why we can’t insure our way out of the climate crisis Just as bookmakers won’t take bets on a one-horse race, insurers will never offer insurance against inevitable sea level rise and floods.

Why we can’t insure our way out of climate crisis

www.thenewdaily.com.au/opinion/2025...

04.07.2025 21:50 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

That's great.
I'm just reporting the impression I got from my GP:
"Here's a new patient for you with [recently diagnosed ADHD]. From now on, it's _your_ responsibility to manage them".

30.06.2025 01:28 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

My wonderful local bulk-billing GP expressed concern over patients being passed over to them from [ADHD] specialists - proper ongoing management+care requires more than just script writing.
Up the Medicare rebates at least!

29.06.2025 21:57 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

Would it have been possible to identify and chop bits off to create a smaller isolated subset Spanish grid where generation = demand and frequently+voltage were stable? Or too hard??

24.06.2025 11:42 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

What we saw was (simplistically) some things detected a problem, disconnecting themselves -> making the problem worse, and causing *more* things to disconnect!
2/

24.06.2025 11:37 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I'd like to ask the question a different way.
Given the first N failures on the Spanish grid, how could it have been brought back under control?
What bits should/shouldn't have disconnected (and how/why), which things could/should have ridden-through?
1/

24.06.2025 11:34 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Just turned on ABC to get news on the US bombing Iran and they are talking to Scott Morrison? WTF?? Who on earth wants to hear from him? Where can I find decent coverage? #iran

22.06.2025 02:24 β€” πŸ‘ 94    πŸ” 11    πŸ’¬ 11    πŸ“Œ 0