I'll say it again for the folks at the back and for all the 'climate scientists' out there. Earth's climate sensitivity isn't 3C or 4.5C or 4.8C or 5.3C or 6C. Those estimates only account for fast feedbacks (sea ice, water vapour, cloud albedo etc). Yet slow feedbacks (ice

David Spratt – "1.5 degrees is a signpost on a dusty road ... it is not a place!" We discuss recently published a report titled: Warming has reached 1.5°C. What does that mean for climate advocacy? youtu.be/J7zhIpougrw #climatechange #climate #podcast

"The study found adults may inhale some 68,000 microplastic particles of 1 to 10 micrometres per day from indoor air — an estimate that is 100 times more than expected"

My full day in the Supreme Court went very well. This message really made me weep last night when the adrenaline wore off 😭 I had to explain to Bob Brown that his $2000 donation yesterday was the second best thing that happened. In fact, two grand is a small but greatly

It’s too scary for most people to face

Incredibly, when discussing climate sensitivity scientists will omit "slow" feedbacks (not slow in the Anthropocene). Hansen's understatement: Slow feedbacks are slightly misleadingly named. Omission is on the basis of insanity... - too slow to be of interest to people who are

The public is allowed to believe that climate change stops at 2100.

In Iraq, temperatures are pushing 50 °C—demand for air-con has overwhelmed the grid, shutting key transmission lines and cutting over 6,000 MW, triggering a nationwide blackout. These extreme temps are deadly, putting millions at severe risk. #ClimateCrisis

Your 'moment of doom' for Aug. 16, 2025 ~ Definition of insanity. "An opposing group of fossil fuel-producing nations vehemently reject the inclusion in the treaty of any provisions aimed at reducing plastic production, which is set to triple by 2060." climatechangenews.com/2025/08/15/pla…

Your 'doom quote' for today: "Quite possibly, then, this era, which so congratulates itself on its self-awareness, will come to be known as the time of the Great Derangement." amazon.com/Great-Derangem…

I was shocked when I first saw these results from standard climate models used in IPCC reports: for high emissions, the Atlantic overturning circulation #AMOC shuts down in all 9 models that ran past 2100, and is well on the way to shutdown by 2100. Our paper is out today. 🧵

The latest climate model generation CMIP6 consists of models from institutes around the world. The IPCC report found that the crucial Atlantic Ocean circulation #AMOC will weaken. Now some of the models have been continued beyond year 2100 and reveal a high risk of full shutdown.

Even more worrying: the tipping point where the shutdown becomes inevitable appears to be when deep convection in the northern Atlantic stops. This tends to happen in the next few decades in these models, see two examples. Despite the models not even including Greenland ice loss!

That raises the question: is deep convection already declining? Data on that are very noisy. They do show a decline in the past ten years. But that time span is too short to tell for sure whether it’s a beginning collapse, or just variability. It’s a matter of risk, or danger.

The risk is much greater than thought. Only a few models have continued intermediate or low emission scenarios beyond year 2100. In some of them the #AMOC shuts down as well. So even for low emissions (compatible with the Paris agreement) we are not safe, but the risk is smaller.

Imagine living on a planet where this is happening…

The Atlantic’s ‘conveyor belt’—the AMOC—could collapse by 2055. That means Northern #Europe freezes, U.S. coasts flood, monsoons fail. This isn’t sci-fi. It’s just physics. Yet many world leaders keep denying #climate science while fast-tracking new fossil fuel drilling. Madness.

The Great Pacific Garbage Patch is now 1.6 million km²—twice the size of Texas—with 1.8 trillion plastic pieces, outweighing surface fish 6 to 1.

#insiders Hansen says 1.5 degrees is ‘deader than a doornail’. We are at +1.5C now, there is 0.6C ‘in the pipeline’ and if we stop burning fossil fuels we suffer +1C of from loss of cooling aerosols. We need drawdown and cooling not just emissions cuts. breakthroughonline.org.au/3rs

Breaking News! Code Yikes! As of Sept. 19, the global temperature anomaly is once again 1.65°C over the pre-industrial baseline. The last time the planet was this overheated was late March. The Climate 8-ball is going for a long walk with the Doom 9-ball to try and reconcile.