John_Green guru
john-greenbuild.bsky.social
John_Green guru
@john-greenbuild.bsky.social
Senior Lecturer in Climate Change Resilience & Sustainability at Sheffield Hallam University.
Born: CO2: 323ppm
popn. 3.5 billion
Post 339 (ihcl. posts on X):
Cryospheres worsening.
Arctic gained 429,000km, dropped to worst on record! And at 9,519,000km and 2.3 million km below average.
Antarctic lost 1,105,000 km, down to 3rd and at 14,065,000km and approx 1.2 million km below average.
Arctic sea ice volume still worst ever.
December 2, 2025 at 8:03 AM
Reposted by John_Green guru
Here is an excellent summary of last week's National Emergency Briefing in London. Well worth a watch and please sign the letter to the Prime Minister linked at the end.
www.youtube.com/watch?v=8sa7...
#climatechange #impacts #energy #health #tippingpoints #nationalsecurity #foodsecurity
This is not the video I had planned to make.
YouTube video by Just Have a Think
www.youtube.com
December 1, 2025 at 4:09 PM
Post 338 (incl. posts on X):
Cryospheres worsening.
Arctic only gained 269,000km, holding at 2nd.
Antarctic lost 1,035,000 km, up to 4th.
Antarctica at 13,937,000km and approx 1.3 million km below average.
Arctic at 9,090,000km and 2 million km below average.
Arctic sea ice volume still worst ever.
November 25, 2025 at 8:23 AM
Reposted by John_Green guru
Your 'doom quote' for today:

"we offer this stark warning: if humanity fails to combat the great global crises we face today, there won't be an Earth--at least not one that we'd recognize."

www.hachettebookgroup.com/titles/micha...
Science Under Siege
In this “well-researched guide,” two of the world’s most respected scientists reveal the forces behind the dangerous anti-science move...
www.hachettebookgroup.com
November 20, 2025 at 2:35 PM
Reposted by John_Green guru
Farage and his clownshow promised to audit councils and save money. The audits were a no start because of data protection. Would you want this racist scum having access to your data, and they haven’t saved a brass penny.

www.thelondoneconomic.com/politics/ken...
Kent council report £46.5m overspend following Reform takeover
Kent County Council is facing a financial blackhole of £46.5m as Reform's running of the authority continues to come under scrutiny.
www.thelondoneconomic.com
November 20, 2025 at 2:37 PM
Post 337 (incl. posts on X):
Cryospheres holding at "Bad".
Arctic gained 640,000km, holding at 2nd.
Antarctic lost 638,000 km, kept at 3rd.
Antarctica at 19,972,000km & approx 1.2 million km below average.
Arctic at 8,821,000km & 1.9 million km below average.
Arctic sea ice volume still worst ever.
November 18, 2025 at 9:29 AM
Reposted by John_Green guru
There are over 1️⃣6️⃣0️⃣0️⃣ gas & oil lobbyists at COP30 👇
What a shocking failure. Would you allow tobacco lobbyists into a world health conference?

There will be 0️⃣ lobbyists at the National Emergency Briefing on the #climate and #nature crisis on 27th November.
Is your MP attending? www.nebriefing.org
November 16, 2025 at 8:32 AM
Reposted by John_Green guru
“Someone with a 1-hr car commute needs to earn 40% more to be as happy as someone with a short walk to work. On the other hand, if someone shifts from a long commute to a walk, their happiness increases as much as if they’d fallen in love.” #CityMakingMath

50 reasons to want more walkable cities.
50 Reasons Why Everyone Should Want More Walkable Streets
From making you live longer to making cities more resilient: If you want a reason to make your city more walkable, it's in here.
www.fastcompany.com
November 16, 2025 at 5:40 AM
Had a recoded “2 min time out” on Radio Sheffield this morning. Glad I didn’t have to go in as my recording was aired at 6.24am - very early for a Sunday morning. Although they cut it a little the opinion piece is called “HOPIUM, HYPOCRISY and HATE”.
www.bbc.co.uk/sounds/play/...
Radio Sheffield - Listen Live - BBC Sounds
Listen live to Radio Sheffield on BBC Sounds
www.bbc.co.uk
November 16, 2025 at 9:03 AM
Reposted by John_Green guru
This has been obvious to anyone paying attention for a long time, but renewables and electrification are destroying a lot of fossil fuel demand and will continue to do so.
www.businessgreen.com/news-analysi...
'An energy revolution is underway': How renewables and electrification are pushing fossil fuel growth to the sidelines
In the face of multiplying geopolitical and energy security risks, the global economy is increasingly switching to electricity and renewables, according to the latest IEA report
www.businessgreen.com
November 12, 2025 at 9:07 AM
Reposted by John_Green guru
And today it's the turn of The Times to try and patronise us all.

Every single day the right wing establishment tries to close ranks.

And every day we are growing.

Join.greenparty.org.uk
November 12, 2025 at 8:33 AM
Reposted by John_Green guru
Yet more evidence corporate climate action saves money, which stands to reason when you consider it is primarily about doing things more efficiently and with lower risk. www.businessgreen.com/news/4521607...
CDP: Companies have saved $54bn through low carbon initiatives
Firms with transition plans are nearly twice as likely as their peers to identify short-term opportunities for driving growth and realising cost savings, corporate disclosure platform claims
www.businessgreen.com
November 11, 2025 at 10:46 AM
Post 336 (incl. posts on X):
Cryospheres both worryingly worse?
Arctic gained 440,000km, down to 2nd. Antarctic lost 582,000 km, kept at 3rd.
Antarctica 15,610,000 km and approx 1.2 million km below average. Arctic 8,181,000km & 2 million km below average.
Arctic sea ice volume still worst ever.
November 11, 2025 at 10:51 AM
Reposted by John_Green guru
We have a great line-up for this event on Friday. Do please come if you're in the area.
www.eventbrite.co.uk/e/time-for-r...
TIME FOR REAL CHANGE: democracy and climate justice
A live conversation about our shared future, with insights from distinguished speakers and activists.
www.eventbrite.co.uk
November 10, 2025 at 12:15 PM
Reposted by John_Green guru
🚨 "If it doesn’t rain, we will have to start restricting water supplies in #Tehran next month. If the drought continues, we will run out of water and be forced to evacuate the city"

The president described the situation as "alarming"

#Iran 🇮🇷
#ClimateEmergency
Evacuation warning for Iran's capital city
President Masoud Pezeshkian warns Tehran faces a historic water crisis with shortages and possible evacuations.
www.newsweek.com
November 8, 2025 at 5:24 AM
Reposted by John_Green guru
If you are looking for some inspiration, watch Zohran Mamdani's extraordinary victory speech last night.

This is what hopeful politics sounds like 👇
www.youtube.com/live/NnM_RgL...
WATCH LIVE: Zohran Mamdani addresses supporters after winning 2025 NYC mayoral race
YouTube video by PBS NewsHour
www.youtube.com
November 5, 2025 at 4:35 PM
Reposted by John_Green guru
Like you I am celebrating Tuesday's victories. However, my job is not to sugarcoat things and tell you it's all fixed. It is to warning about what to expect next and fight back.

That is why I wrote this and why I hope you read and share. www.democracydocket.com/opinion/what...
What Comes Next After the 2025 Elections
Read more here.
www.democracydocket.com
November 6, 2025 at 2:43 AM
Reposted by John_Green guru
Excessive force. PERIOD!

They called them “violent mobs,” but the violence came from the guys with badges and body armor.

📌 Keep sharing videos, everyone, because they’re evidence.
November 6, 2025 at 1:02 AM
Reposted by John_Green guru
Last Saturday my little community raised $10,000 for Feeding America, which they turn into 100,000 meals. I run a meme account and have done more for the hungry in this country than the president, who is intentionally starving women and children for no reason.
November 6, 2025 at 2:18 AM
Reposted by John_Green guru
Ration flying now
True impact of your flying several times higher than commonly used CO₂ calculators suggest
For example current calculations for first class from Singapore to Zurich on B777 plane, say it emits 5000 kg when in fact its 14,000 kg #climate
www.newscientist.com/article/2502...
Your flight emissions are way higher than carbon calculators suggest
Existing tools that work out the carbon footprint of flights greatly underestimate their warming impact, say the makers of a new calculator
www.newscientist.com
November 5, 2025 at 12:30 PM
Post 335 (incl. posts on X): Cryospheres both worryingly worse?
Arctic gained 718,000km, down to 4th. Antarctic lost 488,000 km, kept at 3rd.
Antarctica 16,192,000 km and approx 1.1 million km below average. Arctic 7,741,000km & 2.2 million km below average.
Arctic sea ice volume still worst ever.
November 4, 2025 at 8:22 AM
Reposted by John_Green guru
Every minute spent convincing climate deniers costs one life.

Millions die each year because we’ve failed to tackle the climate crisis: from floods, wildfires, and toxic air to deadly heatwaves and diseases.

We urge the EU: stand firm at COP30.
Don’t bow to fossil fuel giants.
November 3, 2025 at 7:54 AM
Reposted by John_Green guru
Good morning with good news: South Korea now requires parking lots for 80 or more cars to install solar! 2-3 GW of solar results! cm.asiae.co.kr/en/article/2...

China's consumption of transport fuels (gasoline, diesel, kerosene) fell 4% in Jan-Sep.
Credit @laurimyllyvirta.bsky.social

#energysky
November 3, 2025 at 11:05 AM
Reposted by John_Green guru
NEW: Risky levels of forever chemicals in the raw drinking water sources of at least 6 million people prompted the Drinking Water Inspectorate to order water companies to act to ensure it doesn't make it to the tap. 1/2

Covered today on the BBC and...
www.bbc.co.uk/news/article...
Firms ordered to reduce forever chemicals in drinking water for 6m people - BBC News
The persistent pollutants which build up in the environment have been linked to serious illnesses.
www.bbc.co.uk
November 3, 2025 at 8:20 AM