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Prof William Ripple

@williamripple.bsky.social
3.9K followers 205 following 146 posts

Distinguished Professor of Ecology-Oregon State University Director-Alliance of World Scientists Co-Lead author "The 2024 State of the Climate Report" doi.org/10.1093/biosci/biae087

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Prof William Ripple @williamripple.bsky.social · 28/09/2026
We invite everyone (nonscientists) to endorse the Declaration of a Planetary Emergency, part of the upcoming World Scientists’ Warning to Humanity: A Third Notice. Add your name and share widely. Endorsement helps show public concern about the future of our planet. forms.gle/vAARd7mv2yS7...
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Prof William Ripple @williamripple.bsky.social · 23/09/2026
We invite everyone to endorse the Declaration of a Planetary Emergency, part of the upcoming World Scientists’ Warning to Humanity: A Third Notice. Please add your name and share widely. Every endorsement helps show public concern about the future of our planet. docs.google.com/forms/d/e/1F...
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Prof William Ripple @williamripple.bsky.social · 13/08/2026
Scientists worldwide: We invite you to sign the World Scientists’ Warning to Humanity: A Third Notice. Thirty-five years after the first warning, we now declare a planetary emergency. Please read, sign, and share by going to this link: docs.google.com/forms/d/e/1F... @ecowarriorss.bsky.social
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Prof William Ripple @williamripple.bsky.social · 27/07/2026
Scientists worldwide: We invite you to sign the World Scientists’ Warning to Humanity: A Third Notice. Thirty-five years after the first warning, the scientific evidence is even stronger. Please read, sign, and share by going to this link: docs.google.com/forms/d/e/1F...
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Reposted by Prof William Ripple
Prof William Ripple @williamripple.bsky.social · 08/12/2025
In our Climate Report my coauthors and I say: We are hurtling toward climate chaos. The planet's vital signs are flashing red. Consequences of human-driven alterations of the climate are no longer future threats but are here now. Read report here doi.org/10.1093/bios...
doi.org
The 2025 state of the climate report: a planet on the brink
We are hurtling toward climate chaos. The planet's vital signs are flashing red. The consequences of human-driven alterations of the climate are no longer
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Reposted by Prof William Ripple
Prof William Ripple @williamripple.bsky.social · 16/02/2026
The Guardian just published a story on our paper "The Risk of a Hothouse Earth Trajectory" regarding a potential point of no return. You can read it for free here: www.theguardian.com/environment/...
theguardian.com
Point of no return: a hellish ‘hothouse Earth’ getting closer, scientists say
Continued global heating could set irreversible course by triggering climate tipping points, but most people unaware
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Prof William Ripple @williamripple.bsky.social · 16/02/2026
The Guardian just published a story on our paper "The Risk of a Hothouse Earth Trajectory" regarding a potential point of no return. You can read it for free here: www.theguardian.com/environment/...
theguardian.com
Point of no return: a hellish ‘hothouse Earth’ getting closer, scientists say
Continued global heating could set irreversible course by triggering climate tipping points, but most people unaware
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Prof William Ripple @williamripple.bsky.social · 11/02/2026
Concerned about the Point of No Return? Today we published a paper on the risk of a hothouse Earth trajectory. You can read it here: authors.elsevier.com/c/1mbW49C~Iu...
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Prof William Ripple @williamripple.bsky.social · 08/12/2025
In our Climate Report my coauthors and I say: We are hurtling toward climate chaos. The planet's vital signs are flashing red. Consequences of human-driven alterations of the climate are no longer future threats but are here now. Read report here doi.org/10.1093/bios...
doi.org
The 2025 state of the climate report: a planet on the brink
We are hurtling toward climate chaos. The planet's vital signs are flashing red. The consequences of human-driven alterations of the climate are no longer
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Prof William Ripple @williamripple.bsky.social · 27/11/2025
SETTING: SOMETIME IN THE FUTURE: We were hurtling towards climate chaos which ended up really hurting the economy. More info here: doi.org/10.1093/bios...
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Prof William Ripple @williamripple.bsky.social · 22/11/2025
In our Climate Report my coauthors and I say: We are hurtling toward climate chaos. The planet's vital signs are flashing red. Consequences of human-driven alterations of the climate are no longer future threats but are here now. Read report here doi.org/10.1093/bios...
doi.org
The 2025 state of the climate report: a planet on the brink
We are hurtling toward climate chaos. The planet's vital signs are flashing red. The consequences of human-driven alterations of the climate are no longer
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Prof William Ripple @williamripple.bsky.social · 20/11/2025
We recently published a report that serves as a warning to humanity that we are hurtling towards climate chaos. More info here: doi.org/10.1093/bios...
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Prof William Ripple @williamripple.bsky.social · 16/11/2025
You might turn off the tap and also read our new 2025 State of the Climate Report here where we wrote "We are hurtling toward climate chaos. The planet's vital signs are flashing red" doi.org/10.1093/bios...
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Prof William Ripple @williamripple.bsky.social · 14/11/2025
And we warned them with our new 2025 State of the Climate Report which you can check out here: doi.org/10.1093/bios...
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Prof William Ripple @williamripple.bsky.social · 11/11/2025
See our new dire new warning about the state of the planet doi.org/10.1093/bios... | grist.org/climate/scie...
grist.org
Scientists have a dire new warning about the state of the planet
Recent climatic developments "mark the beginning of a grim new chapter for life on Earth," but it's not too late for radical action.
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Prof William Ripple @williamripple.bsky.social · 09/11/2025
We just published a report that serves as a warning to humanity that we are hurtling towards climate chaos. More info here: doi.org/10.1093/bios... and here www.nationthailand.com/blogs/sustai...
nationthailand.com
Earth hits hottest level in 125,000 years
A global study finds 2024 was hotter than the peak of the last Ice Age, with record-breaking heat, ocean warming, and ice loss driving Earth toward irreversible tipping points.
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Prof William Ripple @williamripple.bsky.social · 09/11/2025
In our State of the Climate Report, my coauthors and start by saying: We are hurtling toward climate chaos. The planet's vital signs are flashing red. The consequences of human-driven alterations of the climate are no longer future threats but are here now. Read report here doi.org/10.1093/bios...
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Prof William Ripple @williamripple.bsky.social · 08/11/2025
As we alarmingly wrote "We are hurtling toward climate chaos" in our new State of the Climate Report which just came out. We may be on the path of a hothouse Earth trajectory as shown in this figure. Read the full report: doi.org/10.1093/bios...
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Prof William Ripple @williamripple.bsky.social · 02/11/2025
Our 2025 State of the Climate Report was just published in BioScience by scientists from around the world including @michaelemann.bsky.social @petergleick.bsky.social This video (2 minutes) shows the key highlights: doi.org/10.1093/bios...
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Reposted by Prof William Ripple
Oxford Academic @academic.oup.com · 31/10/2025
🚨 Earth's vital signs are flashing red. 🌡️ 2024 was the hottest year in recorded history. Read the latest Climate report from @williamripple.bsky.social and Christopher Wolf's team, published in BioScience. oxford.ly/47i6K5j
The 2025 state of the climate report: A planet on the brink
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Prof William Ripple @williamripple.bsky.social · 29/10/2025
The window to act on climate is rapidly closing. Our new 2025 State of the Climate report is just out. Read the full report here: doi.org/10.1093/bios... @michaelemann.bsky.social @dwallacewells.bsky.social @georgemonbiot.bsky.social @ecowarriorss.bsky.social
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Prof William Ripple @williamripple.bsky.social · 29/10/2025
As we alarmingly wrote "We are hurtling toward climate chaos" in our new State of the Climate Report which just came out. It is well covered by the LA times. Thanks to my set of distinguished coauthors including @michaelemann.bsky.social @petergleick.bsky.social and others.
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Prof William Ripple @williamripple.bsky.social · 20/10/2025
Defaunation. . . . www.theguardian.com/environment/...
theguardian.com
World’s landscapes may soon be ‘devoid of wild animals’, says nature photographer
Margot Raggett, whose latest compilation shows animals scrubbed from natural habitats, calls for rethink on UK accelerated housebuilding
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Prof William Ripple @williamripple.bsky.social · 19/10/2025
Crazy weather. . . .
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Prof William Ripple @williamripple.bsky.social · 16/10/2025
Our carbon capture plan. . .
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Prof William Ripple @williamripple.bsky.social · 10/10/2025
Pondering the planet. . .
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Prof William Ripple @williamripple.bsky.social · 06/10/2025
Care for some carbon credits?
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Prof William Ripple @williamripple.bsky.social · 06/10/2025
This is key for planetary and personal health: www.theguardian.com/environment/...
theguardian.com
‘Planetary health diet’ could save 40,000 deaths a day, landmark report finds
Diet allows modest meat consumption and would also slash food-related climate emissions by half, says report by 70 leading experts from 35 countries
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Prof William Ripple @williamripple.bsky.social · 03/09/2025
Thanks to @andrewdessler.com for leading our group of 85 scientists to denounce the Trump administration's climate report which is packed full of misinformation. @michaelemann.bsky.social www.nytimes.com/2025/09/02/c...
nytimes.com
Scientists Denounce Trump Administration’s Climate Report
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Prof William Ripple @williamripple.bsky.social · 03/09/2025
I am pleased to be on the science team that wrote a very long response to to the Administration's DOE climate report which is full of errors. Thanks to @andrewdessler.com for leadership on our effort. See NPR story about our work: www.npr.org/2025/09/02/n...
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Prof William Ripple @williamripple.bsky.social · 30/08/2025
Context. . .
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Prof William Ripple @williamripple.bsky.social · 29/08/2025
It appears we have a coal problem. . .
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Prof William Ripple @williamripple.bsky.social · 27/08/2025
This graph is top heavy. . .
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Prof William Ripple @williamripple.bsky.social · 25/08/2025
Wildfires ravaging the EU have torched more than 1m hectares this year, marking 2025 as the worst year on record, a full month before the fire season ends. www.theguardian.com/world/2025/a...
theguardian.com
EU wildfires worst on record as burning season continues
Data shows more than 1m hectares torched so far this year, with records also broken for CO2 and other air pollutants
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Prof William Ripple @williamripple.bsky.social · 04/08/2025
Smoke on 8-4-25 from the wildfires in Canada.
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Prof William Ripple @williamripple.bsky.social · 04/08/2025
Burning wildfires as of 8/4/25 have massive greenhouse gas emissions as part of a feedback loop.
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Prof William Ripple @williamripple.bsky.social · 02/08/2025
Scientists can offer to work together on a response to the US government climate report. Just fill out the form below.
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Prof William Ripple @williamripple.bsky.social · 01/08/2025
A new US Gov climate report minimizes risks of greenhouse gas emissions which is deeply troubling, downplays extreme weather, & misrepresents climate modeling. We need science-driven policy, not denial dressed as skepticism. Thanks to @michaelemann.bsky.social‬ insideclimatenews.org/news/3007202...
insideclimatenews.org
Climate Scientists Look to Fight Back Against DOE’s ‘Antiscientific,’ ‘Deceptive’ Climate Report - Inside Climate News
Climate scientist Michael Mann called the report “a deeply misleading antiscientific narrative, built on deceptive arguments, misrepresented datasets, and distortion of actual scientific understanding...
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Prof William Ripple @williamripple.bsky.social · 01/08/2025
Join in and stand up for science. . .
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Prof William Ripple @williamripple.bsky.social · 29/07/2025
We did it. . .!
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Prof William Ripple @williamripple.bsky.social · 29/07/2025
The lessen is . . .
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Prof William Ripple @williamripple.bsky.social · 29/07/2025
Well done OpEd...
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Prof William Ripple @williamripple.bsky.social · 27/07/2025
What's the harm. .?
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Prof William Ripple @williamripple.bsky.social · 22/07/2025
Our new paper out today: www.livescience.com/animals/land...
livescience.com
Return of wolves to Yellowstone has led to a surge in aspen trees unseen for 80 years
Gray wolves were reintroduced in Yellowstone National Park in 1995 to help control the numbers of elk that were eating young trees, and it is finally paying off for quaking aspen.
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Prof William Ripple @williamripple.bsky.social · 16/07/2025
More floods with climate change...
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Prof William Ripple @williamripple.bsky.social · 15/07/2025
Here is a copy of our most recent state of the climate report. We are on the brink of an irreversible climate disaster. This is a global emergency beyond any doubt. Much of the very fabric of life on Earth is imperiled. . . . . . doi.org/10.1093/bios...
doi.org
The 2024 state of the climate report: Perilous times on planet Earth
We are on the brink of an irreversible climate disaster. This is a global emergency beyond any doubt. Much of the very fabric of life on Earth is imperiled
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Prof William Ripple @williamripple.bsky.social · 15/07/2025
From the past to the future. . .
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Prof William Ripple @williamripple.bsky.social · 14/07/2025
Don't Worry. . .
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Prof William Ripple @williamripple.bsky.social · 13/07/2025
Daniel Swaim makes a good point here.
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