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Simon Lewis

@simonlewis.bsky.social

They say I’m outspoken. Professor of Global Change Science at UCL and University of Leeds. Author, The Human Planet. Trying to understand the world and change it too.

2,430 Followers  |  676 Following  |  135 Posts  |  Joined: 05.07.2023  |  2.0229

Latest posts by simonlewis.bsky.social on Bluesky

Regulatory Toxicology and Pharmacology
ELSEVIER Volume 31, Issue 2, April 2000, Pages 117-165

RETRACTED: Safety Evaluation and Risk
Assessment of the Herbicide Roundup and
Its Active Ingredient, Glyphosate, for
Humans

Gary M. Williams 9 Robert Kroes °, Ian C. Munro © 2

This article has been retracted: please see Elsevier Policy on Article Withdrawal

Regulatory Toxicology and Pharmacology ELSEVIER Volume 31, Issue 2, April 2000, Pages 117-165 RETRACTED: Safety Evaluation and Risk Assessment of the Herbicide Roundup and Its Active Ingredient, Glyphosate, for Humans Gary M. Williams 9 Robert Kroes °, Ian C. Munro © 2 This article has been retracted: please see Elsevier Policy on Article Withdrawal

#Oops: The seminal paper that has been used for 25 years to justify that the use of #Glyphosate is safe has been retracted.

▶️ www.sciencedirect.com/science/arti...

"Concerns were raised regarding the authorship of this paper, validity of the research findings…"

01.12.2025 13:11 — 👍 157    🔁 105    💬 6    📌 23

This is the guy who gave Boris Johnson £1 million and then won a big MoD contract....

04.12.2025 08:30 — 👍 520    🔁 276    💬 25    📌 12
Preview
Revealed: Leak casts doubt on COP30’s ‘informal list’ of fossil-fuel roadmap opponents - Carbon Brief Carbon Brief has obtained a leaked copy of the “informal list” of countries that were characterised as “blocking” the fossil-fuel roadmap’sat COP30.

Carbon Brief has exclusively obtained the 84-strong “informal list” of countries that opposed to a much-discussed “roadmap” deal at #COP30 on “transitioning away from fossil fuels”.

www.carbonbrief.org/revealed-lea...

28.11.2025 16:00 — 👍 10    🔁 5    💬 0    📌 0
Preview
Michael Gove Made Orwell Prize Judge Despite Record of Attacking Journalists and Dodging Scrutiny Critics say "Orwell would have enjoyed the irony" of the former Conservative minister's appointment

I’m a past winner of the Orwell Prize & won partly because I exposed Vote Leave’s unlawful activities.

Michael Gove was its co-convener & refused to answer a single q. He’s now a judge of the prize & our world is truly one that Orwell would recognise

bylinetimes.com/2025/11/25/m...

25.11.2025 17:53 — 👍 2730    🔁 1142    💬 95    📌 64
Dispensing false information in a confident tone, rather than offering no answer when none is readily available, is a major flaw of generative AI, experts say. An audit of the top 10 generative AI models including ChatGPT, Gemini and Meta’s AI by the media literacy non-profit NewsGuard revealed that the non-response rates of chatbots went down from 31% in August 2024 to 0% in August 2025. At the same time, the chatbots’ likelihood of repeating false information almost doubled from 18% to 35%, NewsGuard found. None of the companies responded to NewsGuard’s request for a comment at the time.

Dispensing false information in a confident tone, rather than offering no answer when none is readily available, is a major flaw of generative AI, experts say. An audit of the top 10 generative AI models including ChatGPT, Gemini and Meta’s AI by the media literacy non-profit NewsGuard revealed that the non-response rates of chatbots went down from 31% in August 2024 to 0% in August 2025. At the same time, the chatbots’ likelihood of repeating false information almost doubled from 18% to 35%, NewsGuard found. None of the companies responded to NewsGuard’s request for a comment at the time.

www.theguardian.com/technology/2...

23.11.2025 09:42 — 👍 1091    🔁 419    💬 35    📌 91
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Quite the quote on #COP30, by Professor Michael Jacobs of the think tank ODI Global and the University of Sheffield. Source: ‚Backchannel‘

22.11.2025 23:51 — 👍 100    🔁 46    💬 1    📌 7

Indigenous protected areas have much lower deforestation rates than other areas, so lowering emissions from deforestation (second largest cause climate change after fossil fuel emissions).

22.11.2025 23:12 — 👍 9    🔁 0    💬 1    📌 0

Huge applause and long standing ovation for Marina Silva, what a life, from rubber tapper in the Amazon to environment minister, and quiet star of COP30. Even though the roadmap to halt deforestation is voluntary, if led by Silva, it will be positive.

22.11.2025 21:07 — 👍 9    🔁 0    💬 0    📌 0

Fucked/not fucked is not a binary, many shades here. There is no global ‘we’.

Eg 14 new indigenous territories to be demarcated, announced during COP, as a result of indigenous organization/ protest /international spotlight/ Lula gov. These indigenous cultures ‘less fucked’ now + going forward.

22.11.2025 20:42 — 👍 3    🔁 0    💬 1    📌 0

This is just a weird take. There is a palpable lack of optimism here — literally not one person applauded the gaveling of the cover text today — more like keeping a focus on climate and a focus on multilateralism alive. It’s all deeply flawed, but we both know that.

22.11.2025 18:38 — 👍 1    🔁 0    💬 1    📌 0

Global CO2 emissions increased 18.4% in the 10 yrs prior to the Paris Agreement, and 1.2% in the 10 years after. The graph is clear, there is an inflection point, see in this doc. ca1-eci.edcdn.com/reports/10-Y.... Today’s deal is really poor. But international agreement on climate do have impacts.

22.11.2025 18:14 — 👍 1    🔁 0    💬 2    📌 0

COP30 cover text passed with silence. No applause. Just silence.

Presidency then announced 2 roadmaps, under the Presidency, one on transitioning away from fossil fuels and another on deforestation. To huge applause. Basically a coalition of the willing.

22.11.2025 16:43 — 👍 10    🔁 1    💬 1    📌 0

A climate deal without explicit language calling for a fossil fuel phaseout is like a ceasefire without explicit language calling for a suspension of hostilities.
#COP30

22.11.2025 14:54 — 👍 862    🔁 269    💬 18    📌 16

Final document for #COP30 just dropped and here are some hot takes

1/ No decisive language about FF phaseouts. This is a HUGE loss. The consolation prize is a political process toward phaseouts outside the official decisionmaking of the #ParisAgreement

22.11.2025 15:04 — 👍 29    🔁 18    💬 2    📌 3

Cover decision text, not passed yet, unfccc.int/sites/defaul...

No mention of roadmaps for transitioning away from fossil fuels or curbing deforestation.

Bitterly disappointing.

22.11.2025 15:27 — 👍 1    🔁 1    💬 0    📌 0
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COP30 final plenary starting very soon, but still no new cover text release

22.11.2025 13:45 — 👍 1    🔁 0    💬 0    📌 0

Pre Paris emissions lead to 4C warming by 2100. Today, 2.5 C. Not nothing.

21.11.2025 18:02 — 👍 0    🔁 0    💬 1    📌 0

You ever just sit down and realize that the rise of 21st century fascism is capital's answer to climate change?

21.11.2025 09:25 — 👍 6405    🔁 1650    💬 267    📌 260

Agree on changing strategies as the world changes, of course.

21.11.2025 15:09 — 👍 0    🔁 0    💬 0    📌 0

Given fascism and authoritarianism are on the rise. Why do you focus on the climate talks — multilateralism — as a key problem. Seems odd to me.

21.11.2025 15:09 — 👍 1    🔁 0    💬 2    📌 0

There is so little hope here. Just a grim determination to make some progress and not hand a victory to Trump and his allies by showing multilateralism to be failing.

21.11.2025 14:57 — 👍 1    🔁 0    💬 1    📌 0

Because a world where only might is right is fundamentally worse.

21.11.2025 14:53 — 👍 0    🔁 0    💬 1    📌 0

Likely a fairly weak agreement but the process and multilateralism survives another day. No small thing these days. But needs something on fossil fuels to retain credibility. Needs to tackle the actual problem.

21.11.2025 14:05 — 👍 5    🔁 0    💬 1    📌 0

Then the president can trade these off to craft an agreement that Brazil can sell as ambitious (compared to today), and countries can say they got something (compared to today).

21.11.2025 14:05 — 👍 3    🔁 0    💬 1    📌 0

What’s going on at COP30. The new draft cover text is poor, nothing of fossil fuels or forests, but something, not much, on finance. Here in my take: this is deliberately low-balled, to flush out what’s really important to blocks of countries.

21.11.2025 14:05 — 👍 4    🔁 0    💬 1    📌 0

COP30 President determined to keep all negotiations private. Ministers+1 only meeting now.

21.11.2025 13:55 — 👍 1    🔁 0    💬 0    📌 0
Post image

COP30 President calls plenary. Gives pep talk. Mic drop. Leaves. Now in the centre of this media scrum.

21.11.2025 13:53 — 👍 2    🔁 0    💬 1    📌 0

Waiting for the COP30 plenary, and it’s full, no suprise, because there seems to be no overflow room to show it. Very poor planning from the hosts.

21.11.2025 13:26 — 👍 1    🔁 0    💬 0    📌 0

Jokes aside the fire at COP30 is bad news for the hosts. And that means bad news for multilateralism. The clock is ticking.

20.11.2025 19:34 — 👍 2    🔁 0    💬 0    📌 0

Fire at COP30, we are all evacuated. Hope everyone is ok.

20.11.2025 17:42 — 👍 4    🔁 2    💬 0    📌 0

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