Philip Sargent

Cavers safe after 30-hour rescue during Storm Amy in Wharfedale Rescue teams battled severe weather and flooding at Dowber Gill Passage in the Yorkshire Dales.

I had been watching this develop from afar and wanted to say a massive well done to all the northern cave rescue teams and others assisting. It was a huge effort in a challenging location and conditions.
www.bbc.co.uk/news/article...

Biomethane not viable for widespread use in UK home heating, report finds Gas derived from farm waste can meet only 18% of current gas demand by 2050, despite claims of fossil fuel lobbyists, study finds

Biomethane www.theguardian.com/environment/...

Why Hydrogen Still Doesn’t Work Joe Romm explains the enduring flaws — and why electrification wins

Why Hydrogen Still Doesn’t Work. Joe Romm explains the enduring flaws —… | by Michael Barnard | The Future is Electric | Sep, 2025 | Medium medium.com/the-future-i...

Liebreich: The Pragmatic Climate Reset – Part II: A Provocation | BloombergNEF As the debate on transition deepens, Michael Liebreich details how a pragmatic climate and energy reset might unfold.

4. Hydrogen. In all my decades as an analyst, I have never seen such a big disconnect between the physics and economics of a solution, and the politics of what’s being asked of it. Time to accept that green hydrogen is simply not a climate solution. 22/n
about.bnef.com/insights/cle...

Despite being abused and slandered by Brexiters, including British prime ministers, he's never been anything but generous towards this country. He is urbane, civilised, highly intelligent and immensely impressive.

Very kind compliment, but that work shows that building H2 infrastructure is a whole lot trickier than it looks. Mostly because natural gas has weird properties, and people are too used to that and think it is "normal".

"If a high-pressure natural gas [pipe]... is re-used for hydrogen, then ~40% more recompression stations are required and about 6x as much energy is lost in friction, thus increasing the energy cost
from 2.8% to about 17% of the gas carried. "
www.cambridgeenergyforum.org.uk/cambridgeene...

And this, which is from the unpublished high-pressure paper, which was rejected by the Elsevier process for "plagiarism" because their automated filter said it was too similar to *our* low-pressure paper.
www.cambridgeenergyforum.org.uk/cambridgeene...

OK, the most recently submitted version of this paper is now posted to www.cambridgeenergyforum.org.uk/cambridgeene...
so this should only differ from the actual publication in pagination and anything else the Elsevier production process has modified.
And I'll do the same with the others.

Nope, they only offer image pdf download.

Well I can email you the LaTeX source if you like. But i see what you mean, we would prefer a PDF that we can cut and paste from. But that's Elsevier to blame.

I'll see what I can do, to regenerate my own PDF, but it won't have the same page numbers.

Hydrogen and linepack flexibility It is well known that when transmitting or distributing hydrogen through pre-existing pipelines, the quantity of energy that is stored in the pipe is much lower than when the pipe was carrying natu…

And predicted, using the known physical properties of hydrogen and natural gas: philipsargent.wordpress.com/2025/01/29/h...

Shipping is one of the world’s dirtiest industries – could this invention finally clean up cargo fleets? Freighters emit more greenhouse gases than jets, but a tech startup believes a simple and effective technique can help the industry change course

Shipping is one of the world’s dirtiest industries – could this invention finally clean up cargo fleets? #Climate

Shipboard system that uses limestone and seawater could cut CO₂ emissions by half Scientists at USC and Caltech, in collaboration with startup company Calcarea, have developed a promising shipboard system that could remove up to half of carbon dioxide emitted from shipping vessels ...

techxplore.com/news/2025-06...

Onboard ocean alkanization on ships

Is It Too Soon for Ocean-Based Carbon Credits?

Is It Too Soon for Ocean-Based Carbon Credits? #Climate

Guess my generation isn't retiring then. I anticipate a political consensus on a wealth tax to rapidly develop as millennials approach retirement and decide it's time to start expropriating boomer and Gen X housing wealth.

Protect young secondary forests for optimum carbon removal - Nature Climate Change The authors generate ~1-km2 growth curves for aboveground live carbon in regrowing forests, globally. They show that maximum carbon removal rates can vary by 200-fold spatially and with age, with the ...

www.nature.com/articles/s41...
Protect young secondary forests for optimum carbon removal

From 8,000 experiments to 28: AI does the dirty work for clean ammonia To find the right mix of metals for their green ammonia catalyst, scientists turned to AI. The result was a breakthrough that makes their technique of producing ammonia from air and water more efficie...

A better ammonia process?
newatlas.com/energy/green...

philipsargent.wordpress.com/2025/06/18/s...

How can we send a message to the far future, to the geological future ?
We already have !

Title page of my new report: No Way Home? It is time to remove management of immigration from the Home Office

It's time to abolish the Home Office.

It is not fit for purpose & has totally lost the trust of every stakeholder it serves - We knew that already.

So I looked into how it could practically be done for
@carladenyer.bsky.social

My NEW report out today 👇👇

Today, Planetary issued the first-ever verified Ocean Alkalinity Enhancement carbon removal credits, certified by Isometric and delivered to Stripe, Shopify, and British Airways. | Planetary Today, Planetary issued the first-ever verified Ocean Alkalinity Enhancement carbon removal credits, certified by Isometric and delivered to Stripe, Shopify, and British Airways. These credits demonstrate that our OAE is:  - Scientifically rigorous - Independently verifiable - Safely and actively deploying in the real world Our Tufts Cove project in Halifax dosed over 1,100 tonnes of alkalinity under regulatory oversight, with extensive monitoring and public engagement. The result: 625.6 tonnes of CO2 durably removed, now visible on the Isometric Registry. We are proud to help move OAE from promise to proof, and the work has just begun. Read the full announcement, along with the link to the registry, on our blog:  https://lnkd.in/e_EAZSrC >>> Ready to bring coastal CDR into your climate strategy? info@planetarytech.com <<< #CarbonRemoval #Climate #OAE #MRV #Planetary

Planetary delivered the world's first verified carbon removal tons from Ocean Alkalinity Enhancement (OAE)! www.linkedin.com/pos...

OAE helps undo ocean acidification to allow the it to naturally absorb more CO2 from the atmosphere.

Barbie maker Mattel signs up with OpenAI : Mattel-OpenAI deal paves the way for an AI beach-off

And so it begins..
www.theregister.com/2025/06/13/m...

as I was writing about teddy bears in 2011 "Teddy Bear AI and the New Enlightenment"
philipsargent.wordpress.com/2011/10/31/t...

Life cycle impacts of biomass electricity in 2020 The potential availability of North American biomass feedstocks for electricity in the UK in 2020 is investigated, along with associated greenhouse gas intensities and energy requirements.

The DECC model for the carbon footprint was published. This is the work that David Mackay presented to the SoS, but too late to stop the contract with Drax.
www.gov.uk/government/p...

A conference in a modern venue, with attendees seated at round tables. A presenter stands at a podium in front of large screens displaying slides.

I categorically disagree with claims that CO₂ removal (CDR) is a scam. The field is full of smart people dedicated to figuring out what, if anything, works, because we’ll need CDR in the future for legacy and residual emissions. Funding via market mechanisms isn’t ideal, but doesn’t make it a scam.

Finished watching #Andor. It's a top-tier masterpiece.

As far as I can tell, every other Star War is made for 12-year-olds. If you like that: fine, but I'm 55, and Andor is made for people like me. It's thrilling, adult storytelling of the highest calibre. Bravo.

Ahem.
The carbon black created by pyrolysis may or may not have the properties classified as "carbon black" by the International Maritime Dangerous Goods Code (cf).

Suggest you learn a bit more about coal storage in bulk: why it is compacted, sprayed with water.. why it catches fire spontaneously...

Yes, but also no: in the necessary gigatonne quantities, the finely divided carbon powder becomes a hazardous waste. CO2 is actually *easier* to dispose of, than carbon.

I’ve found it’s more visually appealing to just paste in his head at the inflection points

Linepack flexibility for hydrogen and natural gas pipes: A new flexibility metric for energy systems modelling We present a new metric for comparing linepack capabilities in an intermediate- or high-pressure pipeline, applicable to all fuel gases. This is suita…

Published. Hydrogen linepsck metric.
www.sciencedirect.com/science/arti...