Sam Harrison
@samharrison.science
📈 Environmental modeller @ukceh.bsky.social Lancaster
⚛️ Chemical fate & exposure to plastics, pharma, PFAS
🖥️ Research software engineer, #OpenScience #OpenData and #OpenSource advocate
⛰️ Fell runner & mountain-goer
🧑 Own views
🔗 https://samharrison.science
⚛️ Chemical fate & exposure to plastics, pharma, PFAS
🖥️ Research software engineer, #OpenScience #OpenData and #OpenSource advocate
⛰️ Fell runner & mountain-goer
🧑 Own views
🔗 https://samharrison.science
Pinned
Farming Futures: comparing regenerative and conventional practices on soil, chemical use, and ecosystems in a changing climate at UK Centre for Ecology and Hydrology - Lancaster on FindAPhD.com
PhD Project - Farming Futures: comparing regenerative and conventional practices on soil, chemical use, and ecosystems in a changing climate at UK Centre for Ecology and Hydrology - Lancaster, listed ...
www.findaphd.com
📢 PhD opportunity! 📢
Are you interested in studying how different farming practices influence soils, including chemical levels and bioavailability, functional soil outcomes and other ecosystem endpoints? Check out this ECOSOLUTIONS PhD!
@ukceh.bsky.social
www.findaphd.com/phds/project...
Are you interested in studying how different farming practices influence soils, including chemical levels and bioavailability, functional soil outcomes and other ecosystem endpoints? Check out this ECOSOLUTIONS PhD!
@ukceh.bsky.social
www.findaphd.com/phds/project...
Doesn't it say it all that the most positive outcomes of #COP30 - the roadmaps for deforestation and fossil fuel transition - are the ones achieved without consensus? #ConsensusKillsAmbition
November 23, 2025 at 9:39 AM
Doesn't it say it all that the most positive outcomes of #COP30 - the roadmaps for deforestation and fossil fuel transition - are the ones achieved without consensus? #ConsensusKillsAmbition
📢 Calling environmental modellers! 📢
I'm excited to be chairing two sessions at the @iemss.org Congress, Dublin next July:
B7: Advances in exposure modelling
D4: Reimagining environmental modelling: Designing for flexibility, agility, and change
conference.iemss.org/streams/
I'm excited to be chairing two sessions at the @iemss.org Congress, Dublin next July:
B7: Advances in exposure modelling
D4: Reimagining environmental modelling: Designing for flexibility, agility, and change
conference.iemss.org/streams/
Streams and Sessions – iEMSs 2026
conference.iemss.org
November 21, 2025 at 3:18 PM
📢 Calling environmental modellers! 📢
I'm excited to be chairing two sessions at the @iemss.org Congress, Dublin next July:
B7: Advances in exposure modelling
D4: Reimagining environmental modelling: Designing for flexibility, agility, and change
conference.iemss.org/streams/
I'm excited to be chairing two sessions at the @iemss.org Congress, Dublin next July:
B7: Advances in exposure modelling
D4: Reimagining environmental modelling: Designing for flexibility, agility, and change
conference.iemss.org/streams/
There is a date for #INC-5.3! But, it is only for the "election of officers including for the position of Chair". It will take place in Geneva on 7 February, immediatedly after the first session of the ISP-CWP.
www.unep.org/inc-plastic-...
#GlobalPlasticsTreaty #PlasticsTreaty #PlasticTreaty
www.unep.org/inc-plastic-...
#GlobalPlasticsTreaty #PlasticsTreaty #PlasticTreaty
Third Part of the Fifth Session
UNEP is the global champion for the environment with programmes focusing on sustainable development, climate, biodiversity and more.
www.unep.org
November 7, 2025 at 1:26 PM
There is a date for #INC-5.3! But, it is only for the "election of officers including for the position of Chair". It will take place in Geneva on 7 February, immediatedly after the first session of the ISP-CWP.
www.unep.org/inc-plastic-...
#GlobalPlasticsTreaty #PlasticsTreaty #PlasticTreaty
www.unep.org/inc-plastic-...
#GlobalPlasticsTreaty #PlasticsTreaty #PlasticTreaty
📢 PhD opportunity! 📢
Are you interested in studying how different farming practices influence soils, including chemical levels and bioavailability, functional soil outcomes and other ecosystem endpoints? Check out this ECOSOLUTIONS PhD!
@ukceh.bsky.social
www.findaphd.com/phds/project...
Are you interested in studying how different farming practices influence soils, including chemical levels and bioavailability, functional soil outcomes and other ecosystem endpoints? Check out this ECOSOLUTIONS PhD!
@ukceh.bsky.social
www.findaphd.com/phds/project...
Farming Futures: comparing regenerative and conventional practices on soil, chemical use, and ecosystems in a changing climate at UK Centre for Ecology and Hydrology - Lancaster on FindAPhD.com
PhD Project - Farming Futures: comparing regenerative and conventional practices on soil, chemical use, and ecosystems in a changing climate at UK Centre for Ecology and Hydrology - Lancaster, listed ...
www.findaphd.com
November 1, 2025 at 10:42 PM
📢 PhD opportunity! 📢
Are you interested in studying how different farming practices influence soils, including chemical levels and bioavailability, functional soil outcomes and other ecosystem endpoints? Check out this ECOSOLUTIONS PhD!
@ukceh.bsky.social
www.findaphd.com/phds/project...
Are you interested in studying how different farming practices influence soils, including chemical levels and bioavailability, functional soil outcomes and other ecosystem endpoints? Check out this ECOSOLUTIONS PhD!
@ukceh.bsky.social
www.findaphd.com/phds/project...
BPA free doesn't always mean BPA free! Does anyone have a link to the actual study? I want to know whether they tested for other bisphenols.
www.theguardian.com/society/2025...
www.theguardian.com/society/2025...
Chemical linked to low sperm count, obesity and cancer found in dummies, tests find
BPA, a synthetic chemical used in production of plastics, found in baby products made by three big European brands
www.theguardian.com
October 18, 2025 at 8:51 AM
BPA free doesn't always mean BPA free! Does anyone have a link to the actual study? I want to know whether they tested for other bisphenols.
www.theguardian.com/society/2025...
www.theguardian.com/society/2025...
The Chair of the #GlobalPlasticsTreaty negotiations, Luis Vayas Valdivieso, is stepping down, for personal and professional reasons.
#INC5.2 #INC5 #PlasticsTreaty
www.theguardian.com/environment/...
#INC5.2 #INC5 #PlasticsTreaty
www.theguardian.com/environment/...
UN plastics treaty chair to step down with process in turmoil
Exclusive: Luis Vayas Valdivieso says he is quitting for personal and professional reasons after reports of pressure behind the scenes
www.theguardian.com
October 7, 2025 at 12:18 PM
The Chair of the #GlobalPlasticsTreaty negotiations, Luis Vayas Valdivieso, is stepping down, for personal and professional reasons.
#INC5.2 #INC5 #PlasticsTreaty
www.theguardian.com/environment/...
#INC5.2 #INC5 #PlasticsTreaty
www.theguardian.com/environment/...
I hate doing expenses claims...
September 8, 2025 at 7:37 AM
I hate doing expenses claims...
Reposted by Sam Harrison
Plastics Treaty — What happened? What's next?
Negotiations collapsed in Geneva. Disappointing, yes. Defeat? Certainly not.
📽️ Watch: What happened, what's next — and why we still have hope! #PlasticsTreaty #INC52 youtu.be/-HgqLVANa78
Negotiations collapsed in Geneva. Disappointing, yes. Defeat? Certainly not.
📽️ Watch: What happened, what's next — and why we still have hope! #PlasticsTreaty #INC52 youtu.be/-HgqLVANa78
Plastics Treaty - What happened? What's next?
YouTube video by Center for International Environmental Law
youtu.be
August 29, 2025 at 6:21 PM
Plastics Treaty — What happened? What's next?
Negotiations collapsed in Geneva. Disappointing, yes. Defeat? Certainly not.
📽️ Watch: What happened, what's next — and why we still have hope! #PlasticsTreaty #INC52 youtu.be/-HgqLVANa78
Negotiations collapsed in Geneva. Disappointing, yes. Defeat? Certainly not.
📽️ Watch: What happened, what's next — and why we still have hope! #PlasticsTreaty #INC52 youtu.be/-HgqLVANa78
"Because of the complexity and number of chemicals to assess and the enormous variability of their uses, the regulatory system is overwhelmed and not sufficiently protective ... chemical pollution has become a serious global issue."
www.annualreviews.org/content/jour...
www.annualreviews.org/content/jour...
The State of the World's Chemical Pollution | Annual Reviews
The chemicals available on the world's markets are of enormous diversity. Their total number is estimated to be approximately 350,000; this high number is a huge challenge for the systems of chem...
www.annualreviews.org
August 22, 2025 at 8:04 PM
"Because of the complexity and number of chemicals to assess and the enormous variability of their uses, the regulatory system is overwhelmed and not sufficiently protective ... chemical pollution has become a serious global issue."
www.annualreviews.org/content/jour...
www.annualreviews.org/content/jour...
Reposted by Sam Harrison
🌍 A UKCEH team were observers at the latest UN talks on a global treaty to end plastic pollution.
Negotiations ended without consensus after 2 intense weeks, but there are glimmers of hope
🔗 tinyurl.com/mrxmfm87
🧵🧪 1/
@samharrison.science @richardkcross.bsky.social @feuchtmayr.bsky.social #INC5
Negotiations ended without consensus after 2 intense weeks, but there are glimmers of hope
🔗 tinyurl.com/mrxmfm87
🧵🧪 1/
@samharrison.science @richardkcross.bsky.social @feuchtmayr.bsky.social #INC5
August 22, 2025 at 1:25 PM
🌍 A UKCEH team were observers at the latest UN talks on a global treaty to end plastic pollution.
Negotiations ended without consensus after 2 intense weeks, but there are glimmers of hope
🔗 tinyurl.com/mrxmfm87
🧵🧪 1/
@samharrison.science @richardkcross.bsky.social @feuchtmayr.bsky.social #INC5
Negotiations ended without consensus after 2 intense weeks, but there are glimmers of hope
🔗 tinyurl.com/mrxmfm87
🧵🧪 1/
@samharrison.science @richardkcross.bsky.social @feuchtmayr.bsky.social #INC5
Reposted by Sam Harrison
The #PlasticsTreaty talks have ended without a treaty. To call this process a failure is an understatement. The world doesn't need more plastic. People know it, doctors know it, markets know it. We must now restart — not repeat.
👉 Read our statement: bit.ly/4fIWhCC
👉 Read our statement: bit.ly/4fIWhCC
Geneva Plastics Treaty Talks End in Abject Failure - Center for International Environmental Law
Plastics treaty talks collapse at the end of the resumed fifth session of the negotiations (INC-5.2).
bit.ly
August 15, 2025 at 8:18 AM
The #PlasticsTreaty talks have ended without a treaty. To call this process a failure is an understatement. The world doesn't need more plastic. People know it, doctors know it, markets know it. We must now restart — not repeat.
👉 Read our statement: bit.ly/4fIWhCC
👉 Read our statement: bit.ly/4fIWhCC
There will be no #GlobalPlasticsTreaty from #INC5.2. The Chair informed us at just after 6am this morning that, despite best efforts and a new revised Chair's text overnight, consensus could not be reached.
#PlasticsTreaty
#PlasticsTreaty
August 15, 2025 at 5:13 AM
There will be no #GlobalPlasticsTreaty from #INC5.2. The Chair informed us at just after 6am this morning that, despite best efforts and a new revised Chair's text overnight, consensus could not be reached.
#PlasticsTreaty
#PlasticsTreaty
It is 5.30am in Geneva and the final #INC5.2 plenary is scheduled to resume.
The new revised Chair's text is many steps from being able to fully end plastic pollution, but it is a few steps in the right direction. Now we find out how countries will react.
#PlasticsTreaty #GlobalPlasticsTreaty
The new revised Chair's text is many steps from being able to fully end plastic pollution, but it is a few steps in the right direction. Now we find out how countries will react.
#PlasticsTreaty #GlobalPlasticsTreaty
August 15, 2025 at 3:41 AM
It is 5.30am in Geneva and the final #INC5.2 plenary is scheduled to resume.
The new revised Chair's text is many steps from being able to fully end plastic pollution, but it is a few steps in the right direction. Now we find out how countries will react.
#PlasticsTreaty #GlobalPlasticsTreaty
The new revised Chair's text is many steps from being able to fully end plastic pollution, but it is a few steps in the right direction. Now we find out how countries will react.
#PlasticsTreaty #GlobalPlasticsTreaty
New revised Chair's text. Chemicals of concern are now explicitly mentioned, and majority voting is possible at COPs where consensus cannot be reached. But still no article on sustainable production and consumption.
#PlasticsTreaty #GlobalPlasticsTreaty #INC5.2
resolutions.unep.org/incres/uploa...
#PlasticsTreaty #GlobalPlasticsTreaty #INC5.2
resolutions.unep.org/incres/uploa...
August 15, 2025 at 12:09 AM
New revised Chair's text. Chemicals of concern are now explicitly mentioned, and majority voting is possible at COPs where consensus cannot be reached. But still no article on sustainable production and consumption.
#PlasticsTreaty #GlobalPlasticsTreaty #INC5.2
resolutions.unep.org/incres/uploa...
#PlasticsTreaty #GlobalPlasticsTreaty #INC5.2
resolutions.unep.org/incres/uploa...
#INC5.2 final plenary started at 11.30pm and almost immediately adjourned until Friday, at a time to be announced. Informal negotiations still ongoing with a Heads of Delegation meeting starting at 2am.
#PlasticsTreaty #GlobalPlasticsTreaty
#PlasticsTreaty #GlobalPlasticsTreaty
August 14, 2025 at 11:23 PM
#INC5.2 final plenary started at 11.30pm and almost immediately adjourned until Friday, at a time to be announced. Informal negotiations still ongoing with a Heads of Delegation meeting starting at 2am.
#PlasticsTreaty #GlobalPlasticsTreaty
#PlasticsTreaty #GlobalPlasticsTreaty
Waiting for the final plenary of #INC5.2. Will it be this side of midnight?!
#GlobalPlasticsTreaty #PlasticsTreaty
#GlobalPlasticsTreaty #PlasticsTreaty
August 14, 2025 at 7:23 PM
Waiting for the final plenary of #INC5.2. Will it be this side of midnight?!
#GlobalPlasticsTreaty #PlasticsTreaty
#GlobalPlasticsTreaty #PlasticsTreaty
Les Aubes - a series of free concerts every morning during summer from 6-7am on Bains des Pâquis. Completely free and the best bit is you can watch whilst enjoying your morning swim!
#INC5.2 #PlasticsTreaty #GlobalPlasticsTreaty
#INC5.2 #PlasticsTreaty #GlobalPlasticsTreaty
August 13, 2025 at 6:57 AM
Les Aubes - a series of free concerts every morning during summer from 6-7am on Bains des Pâquis. Completely free and the best bit is you can watch whilst enjoying your morning swim!
#INC5.2 #PlasticsTreaty #GlobalPlasticsTreaty
#INC5.2 #PlasticsTreaty #GlobalPlasticsTreaty
I escaped from the madness of #INC5.2 and Geneva with a day trip across the border to the Chamonix valley today. The (literal) high point of my walk was Lac de la Perseverance (photo 3), which seems a very suitably named lake to visit right now!
#GlobalPlasticsTreaty #PlasticsTreaty
#GlobalPlasticsTreaty #PlasticsTreaty
August 10, 2025 at 9:25 PM
I escaped from the madness of #INC5.2 and Geneva with a day trip across the border to the Chamonix valley today. The (literal) high point of my walk was Lac de la Perseverance (photo 3), which seems a very suitably named lake to visit right now!
#GlobalPlasticsTreaty #PlasticsTreaty
#GlobalPlasticsTreaty #PlasticsTreaty
Reposted by Sam Harrison
"We have to think about who we're solving this problem for: the next generation & the environments we depend on."
Ben von Wong's brilliant, innovative art calling is calling on the world to #BeatPlasticPollution. Great to catch up with him at #INC5.2 as we continue negotiations on a #PlasticsTreaty
Ben von Wong's brilliant, innovative art calling is calling on the world to #BeatPlasticPollution. Great to catch up with him at #INC5.2 as we continue negotiations on a #PlasticsTreaty
August 7, 2025 at 6:28 PM
"We have to think about who we're solving this problem for: the next generation & the environments we depend on."
Ben von Wong's brilliant, innovative art calling is calling on the world to #BeatPlasticPollution. Great to catch up with him at #INC5.2 as we continue negotiations on a #PlasticsTreaty
Ben von Wong's brilliant, innovative art calling is calling on the world to #BeatPlasticPollution. Great to catch up with him at #INC5.2 as we continue negotiations on a #PlasticsTreaty
Some reflections on the first few days of #INC5.2 negotations in Geneva, towards a #GlobalPlasticsTreaty.
Are the negotiations going well? Frankly, not really, though there are reasons for hope 👇
@ukceh.bsky.social
#PlasticsTreaty #PlasticTreaty #GlobalPlasticTreaty
Are the negotiations going well? Frankly, not really, though there are reasons for hope 👇
@ukceh.bsky.social
#PlasticsTreaty #PlasticTreaty #GlobalPlasticTreaty
August 8, 2025 at 10:32 AM
Some reflections on the first few days of #INC5.2 negotations in Geneva, towards a #GlobalPlasticsTreaty.
Are the negotiations going well? Frankly, not really, though there are reasons for hope 👇
@ukceh.bsky.social
#PlasticsTreaty #PlasticTreaty #GlobalPlasticTreaty
Are the negotiations going well? Frankly, not really, though there are reasons for hope 👇
@ukceh.bsky.social
#PlasticsTreaty #PlasticTreaty #GlobalPlasticTreaty
Insightful screening of Homo Plasticus: Plastic Inside Us this evening, followed by an equally as insightful panel discussion. Lots of emerging evidence of the real health risks plastics pose to society, underpinning the need for a strong #GlobalPlasticsTreaty
#INC5.2 #PlasticsTreaty
#INC5.2 #PlasticsTreaty
August 4, 2025 at 9:24 PM
Insightful screening of Homo Plasticus: Plastic Inside Us this evening, followed by an equally as insightful panel discussion. Lots of emerging evidence of the real health risks plastics pose to society, underpinning the need for a strong #GlobalPlasticsTreaty
#INC5.2 #PlasticsTreaty
#INC5.2 #PlasticsTreaty
Panel discussion on "science and research for an effective instrument": strong support for science-based decisions free of conflicts of interest, and a need for transparency in not just Treaty processes, but the data needed to support it.
#INC5.2 #PlasticsTreaty
@bcarneyalmroth.bsky.social
#INC5.2 #PlasticsTreaty
@bcarneyalmroth.bsky.social
August 4, 2025 at 12:42 PM
Panel discussion on "science and research for an effective instrument": strong support for science-based decisions free of conflicts of interest, and a need for transparency in not just Treaty processes, but the data needed to support it.
#INC5.2 #PlasticsTreaty
@bcarneyalmroth.bsky.social
#INC5.2 #PlasticsTreaty
@bcarneyalmroth.bsky.social
Reposted by Sam Harrison
🌍 Advancing science to end plastic pollution:
UKCEH scientists are at the final Global Plastics Treaty talks this week as official Observers—ensuring negotiations are shaped by scientific evidence and expertise.
#PlasticsTreaty #INC5
🧵🧪 1/
UKCEH scientists are at the final Global Plastics Treaty talks this week as official Observers—ensuring negotiations are shaped by scientific evidence and expertise.
#PlasticsTreaty #INC5
🧵🧪 1/
August 4, 2025 at 10:20 AM
🌍 Advancing science to end plastic pollution:
UKCEH scientists are at the final Global Plastics Treaty talks this week as official Observers—ensuring negotiations are shaped by scientific evidence and expertise.
#PlasticsTreaty #INC5
🧵🧪 1/
UKCEH scientists are at the final Global Plastics Treaty talks this week as official Observers—ensuring negotiations are shaped by scientific evidence and expertise.
#PlasticsTreaty #INC5
🧵🧪 1/