maryhgagen
banner
maryhgagen.bsky.social
maryhgagen
@maryhgagen.bsky.social
50% scientist, 50% Lorax. Climate scientist & Geog Prof @SwanseaUni. STEM Outreach via swansci4. Former WWF Uk. Expressed views are my own.
Reposted by maryhgagen
How much carbon budget do we have left if we want to stay below 1.5˚C?

Just 2 more years at current rates. It is essentially impossible to avoid global temperature rise exceeding 1.5˚C.

climatelabbook.substack.com/p/the-shrink...
November 13, 2025 at 1:19 PM
Reposted by maryhgagen
World still on track for catastrophic 2.6C temperature rise, report finds

- Fossil fuel emissions to hit a record high in 2025

- Analyses also show worrying weakening of the planet’s natural carbon sinks

#COP30 #climatecrisis
Story by Oliver Milman & me
www.theguardian.com/environment/...
World still on track for catastrophic 2.6C temperature rise, report finds
Fossil fuel emissions have hit a record high while many nations have done too little to avert deadly global heating
www.theguardian.com
November 13, 2025 at 10:07 AM
Reposted by maryhgagen
Looking for a PhD in climate science?

Great opportunity to help modernise one of the iconic climate time series - Central England Temperature.

Led by @timosbornclim.bsky.social, with myself and Met Office collaborators: www.uea.ac.uk/course/phd-d...
PhD Redeveloping Central England Temperature: Modernising a Historic Climate Series, CASE project with Met Office (OSBORNT_U26SCI) 2026/27 | UEA
PhD Redeveloping Central England Temperature: Modernising a Historic Climate Series, CASE project with Met Office (OSBORNT_U26SCI) 2026/27 | UEA
www.uea.ac.uk
November 12, 2025 at 5:38 PM
Reposted by maryhgagen
New report with @WWFCymru.bsky.social exposes the hidden link between Welsh food, Brazilian deforestation and river pollution in Wales 🌍

Read Food, Forests and Injustice:
👉

sizeofwales.org.uk/news/new-rep...

#SizeOfWales #WWFCymru #ClimateAction #COP30 #CymruatCOP30
New Report Exposes Hidden Link Between Welsh Food, Brazilian Deforestation and river pollution in Wales - Size of Wales
sizeofwales.org.uk
November 11, 2025 at 7:42 AM
Good man, it does us too …
October 31, 2025 at 4:50 PM
Reposted by maryhgagen
New preprint alert! 🚨

“Let Them Eat Large Language Models: Artificial Intelligence and Austerity in the Neoliberal University”
October 25, 2025 at 5:05 PM
Reposted by maryhgagen
“CO2 is plant foo…” oh shit!
October 24, 2025 at 8:47 PM
Reposted by maryhgagen
Water companies’ environmental performance last year was the worst since a government star rating scheme started 14 years ago.
www.thetimes.com/uk/environme...
Water firms given worst rating on record for environmental performance
England’s nine main water companies collectively scored 19 stars out of a possible 36 — the worst since the rating system was set up 14 years ago
www.thetimes.com
October 23, 2025 at 9:14 AM
Reposted by maryhgagen
A threat to the Amazon rainforest is a threat to our entire world.

But this precious ecosystem is at risk of reaching an irreversible tipping point, and we need to act now to protect it.

Without the Amazon, we lose the fight against #ClimateChange. 👇
The Amazon Rainforest
The Amazon rainforest plays a vital role in sustaining life on the planet. Yet, this vast, tropical wilderness and its inhabitants are losing the fight.
www.wwf.org.uk
October 20, 2025 at 12:12 PM
If you’re joining us for today’s @swanseauni.bsky.social open day, stop by and say hi to our 2m inflatable Earthball globe! 😁💚 💙🌍 Where will geography take you? #ucasopenday #ucas #swansea #geographyteacher #unilife #swanseauni
October 18, 2025 at 6:50 AM
University administration:
"We need you to complete 26 hours of lab safety training 🧪 each year so that everyone is safe and responsible."

Also university administration:
October 15, 2025 at 5:50 PM
The 2025 Forest Declaration Assessment is out and can broadly be summarised as “we suck” .“off track” numbers have gone from (2023) 35% to (2024) 45% to (2025) 63% off track from the 2030 goals . These are ridiculous levels of Forest policy failure . news.mongabay.com/short-articl...
Global goal of zero deforestation by 2030 is severely off track
Global deforestation hasn’t slowed in any significant way in the four years since 127 countries pledged to halt and reverse forest loss and degradation by 2030. The newly published 2025 Forest Declara...
news.mongabay.com
October 14, 2025 at 11:38 AM
…and currently in St Mary’s Church Swansea , for #swanseaartweekend . Do go, it’s very lovely ☀️
October 11, 2025 at 5:48 PM
Reposted by maryhgagen
Thoughtful essay

“we are in danger of forgetting the greatest untapped resource on any college campus — the professors. We are surrounded by human experts, yet we are being encouraged to take our questions to robots”
AI ate my homework: My experience with the University’s AI toolkit
I don’t understand AI enough to properly dislike it. And I’m curious as to why the University is pushing this tool so much if it inherently devalues learning. So I immersed myself in artificial intell...
www.michigandaily.com
October 6, 2025 at 6:36 PM
Lovely to host some @swanseauni.bsky.social Geography alumni , here in our little corner of Wales , this morning. What a nice part of the job! Enjoyed a few choice quotes -“Geography is essential for everything!” I mean we think so too… 😁💚🌳🌍 Have a great weekend, all, it was a pleasure to meet you!
October 4, 2025 at 1:52 PM
Reposted by maryhgagen
Do any of you have a fun map-reading and orienteering activity you’d be willing to share? I’d like to see some examples as I’m putting a skill session together for my natural history class. It could be something done in-class, or it could involve an outdoor scavenger hunt-type exercise (1 hour).
October 1, 2025 at 12:51 PM
Really enjoyed chatting about plants & sound with @bengarrod.bsky.social for Radio 3s The Essay. We talked about Milburn’s work on xylem cavitation where he recorded the sound it makes through the trunk . But is it tree music ? …🌳🎶 😊 www.bbc.co.uk/sounds/play/...
The Essay - Symphony of the Wild - 3. Plant Rhythms - BBC Sounds
Evolutionary biologist Ben Garrod uncovers melodies and rhythms across the natural world.
www.bbc.co.uk
September 18, 2025 at 7:07 AM
Reposted by maryhgagen
Ship’s floor (oak) reused as lintel. Removed during construction work from Cambrian Place Swansea. Dendro dated to spring summer 1778 and sourced from a locally grown Welsh 🏴󠁧󠁢󠁷󠁬󠁳󠁿 tree! #dendrochronology #wales #archaeology
September 10, 2025 at 12:57 PM
Reposted by maryhgagen
Two very important graphs.
Net migration reached record levels in 2023 - and has since halved.
The vast majority of arrivals comprises students and workers.
Arrivals in small boats and asylum seekers - less than 5%.
www.theguardian.com/uk-news/2025...
September 14, 2025 at 9:56 AM
One of my favourite Welsh treescapes, around the @nationaltrust.org.uk Wales Stackpole lily ponds 💚🌳 Looking very handsome in its end of summer coat 🍁 🍃
September 10, 2025 at 7:57 AM
Reposted by maryhgagen
Deforestation kills more than trees.
Deforestation has killed half a million people in past 20 years, study finds
Localised rises in temperature caused by land clearance cause 28,330 heat-related deaths a year, researchers find
www.theguardian.com
August 27, 2025 at 9:15 AM
Thanks so much to the team at School Science Review for the chance to write about climate communication, directionally motivated reasoning and why deficit approach climate outreach just doesn’t work . If you’re looking to change hearts and minds on climate , have a read .
Take a moment to explore this open access gem from the latest SSR 📘

Mary Gagen explores how students’ beliefs & life experiences shape their interpretation of climate info—and why empathy matters when teaching climate science.

🌍 Read now: ow.ly/5CFq50WvWzx

#ASEjournals
July 30, 2025 at 3:36 PM
www.bbc.co.uk/news/article...

A tree I , sadly, never had a chance to meet .

If it’s loss angered you, please also get angry about 7% of our woods being in ecological health, street trees being routinely ripped out, & industrial monoculture plantations in our national parks .
The Sycamore Gap case has shed light on a deeper issue with trees
The felling has prompted calls for stricter legal protections for other trees and drawn attention to wider issues
www.bbc.co.uk
July 15, 2025 at 6:12 AM
theconversation.com/britains-wil...

Since I wrote this this piece in 2023 the Woodland Trusts 2025 report has found :

- two new woodland pests have emerged .
- the decline in woodland wildlife has got worse
- woodland creation targets are being missed
Britain’s wild woods are under threat and we’re running out of time to save them
Just 2.5% of the country has been continuously wooded for centuries.
theconversation.com
July 15, 2025 at 6:02 AM
Our park and street trees are absolutely vital in hot weather , they provide shade , moisture to the atmosphere, and with it , free air conditioning. #streettrees #urbanwoodland
July 10, 2025 at 7:01 PM