RCP8.5 Is Dead. Someone Forgot to Tell Australia.
Donald Trump posted it in caps lock on Truth Social. The White House amplified it on X. The Dutch front-paged it in De Volkskrant. The Germans ran it in Die Welt. New Zealand's Daily Telegraph found space.
Australian media: nothing.
The story they all ran — and we didn't — was this: on 7 April 2026, Detlef van Vuuren, one of the original architects of the world's most-cited climate worst-case scenario, published a verdict in Geoscientific Model Development: the scenario was "implausible" and should be retired. Its own architects. Formally retiring it.
Roger Pielke compiled the media inventory. Australia doesn't appear. Not the ABC. Not the Herald. Not the Fin. Not Crikey. Not the Guardian's Australia desk. We export the coal, we cop the heat, our cities lead the global rankings for climate-exposed housing markets, and we have an insurance sector so exposed that actuaries use us as a case study. We're the only developed nation that couldn't find a paragraph.
The scenario is RCP8.5: the IPCC framework where emissions rise hard and stay high to 2100. It's been Australia's standard high-end planning input for a decade. The 2025 National Climate Risk Assessment runs on it. DCCEEW's federal projections run on it. APRA's banking stress tests run on it. The Climate Council headline that one in 25 Australian homes will be uninsurable by 2030 — the number that's run our insurance debate for four years — flows from those assumptions. The family in Lismore deciding whether to rebuild, the couple in Logan staring at their premium, the thirty-year mortgage signed in Bunbury: all priced against a model the scientists just walked back.
The Climate Council's methodology page still labels RCP8.5 "business as usual": the framing Hausfather and Peters asked the world to retire in Nature in 2020, and Pielke, Burgess and Ritchie formally repeated in 2022. Six years. Two peer-reviewed corrections. One formal scientific verdict. The page is still up. It's the climate-policy equivalent of a café that still has the COVID QR code laminated to the door since 2021. Technically no one's job to remove it. Technically no one's problem. Until someone has to price the premium.
Scientists retired RCP8.5. The insurance stress tests, Treasury models, and risk assessments haven't received the memo, and won't until Australian media decides a scientific retraction is worth a paragraph. The Dutch found two paragraphs on the front page. We found zero. The mortgage is thirty years. Sleep tight.
