Prof William Ripple

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...

🌍 “This is no longer a warning for the future; it is a diagnosis of the present.” Our 2026 State of the Climate report finds 7 of 16 planetary vital signs at record extremes. The planetary emergency is already here. doi.org/10.1093/bios...

We just published the 2026 State of the Climate Report. Of 16 planetary vital signs spanning greenhouse gas concentrations, temperatures, the oceans, ice, energy balance, and wildfire, 7 (44%) are currently at record extremes. Read report here: doi.org/10.1093/bios...

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. If you are a scientist, please read, sign, and share and go to this link: docs.google.com/forms/d/e/1F...

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...

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...

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...

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

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...

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...

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/...

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/...

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...

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...

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...

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...

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...

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...

And we warned them with our new 2025 State of the Climate Report which you can check out here: doi.org/10.1093/bios...

See our new dire new warning about the state of the planet doi.org/10.1093/bios... | grist.org/climate/scie...

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...

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...

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...

🚨 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 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

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.

Defaunation. . . . www.theguardian.com/environment/...

Crazy weather. . . .

Our carbon capture plan. . .

Pondering the planet. . .

Care for some carbon credits?

This is key for planetary and personal health: www.theguardian.com/environment/...

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...

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...

Context. . .

It appears we have a coal problem. . .

This graph is top heavy. . .

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...

Smoke on 8-4-25 from the wildfires in Canada.

Burning wildfires as of 8/4/25 have massive greenhouse gas emissions as part of a feedback loop.

Scientists can offer to work together on a response to the US government climate report. Just fill out the form below.

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...

Join in and stand up for science. . .

We did it. . .!

The lessen is . . .

Well done OpEd...

What's the harm. .?

Our new paper out today: www.livescience.com/animals/land...

More floods with climate change...