Director @PIK_climate. Also Professor @unipotsdam, @sthlmresilience. Internationally recognised Earth scientist on global sustainability, #PlanetaryBoundaries.
Joined January 2013
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Johan Rockström retweeted
Barack Obama decided to hit Pete Hegseth with the elbow from the top rope. Absolutely brutal takedown.
Johan Rockström retweeted
“I have worked on the AMOC for more than 30 years. I’m increasingly worried”, states PIK scientist @rahmstorf. The Atlantic Meridional Overturning Circulation (AMOC) carries warm water northward. #climatechange is putting this ocean circulation at risk.
👉 youtube.com/watch?v=sNOSCWxr…
Johan Rockström retweeted
The next Global Tipping Points Conference comes to Potsdam & Berlin, 24–28 May 2027! Thank you to the Sunway Centre for Planetary Health for hosting GTPC2026. We look forward to welcoming the tipping points community to Germany. GTPC2027 website: global-tipping-points.org/co…
Check out my latest article: 2026 State of the Climate Report: Earth's climate system is becoming unstable linkedin.com/pulse/2026-stat… via @LinkedIn
Johan Rockström retweeted
A PIK study finds that the loss of resilience observed in real-world North Atlantic sea-surface temperatures does not occur easily in historical model simulations – pointing to the Atlantic Meridional Overturning Circulation #AMOC as a plausible driver.
➡️ journals.plos.org/climate/ar…
Johan Rockström retweeted
Plant diversity = insurance against #ClimateChange.
🆕PIK-led study with Kiel University finds: grasslands with strongly reduced plant diversity could take up 15% less CO₂ through photosynthesis in 2050 than those where diversity is maintained.
Story:⬇️
pik-potsdam.de/en/news/lates…
You want a safe future for humanity on Earth? Base all actions on science. IPCC provides us the basis for a manageable climate future for people today and tomorrow, across the entire world. Do not undermine it.
canva.link/otb5443x9uitpy7
Progress continues despite the headwinds in a fragmented world. weforum.org/publications/chi… via @wef
Johan Rockström retweeted
Senator Elissa Slotkin just asked Secretary of Defense Pete Hegseth if he's been given the order to shoot at unarmed protesters.
Hegseth struggles to simply answer the question, and instead goes on the attack. Slotkin is having none of it.
Johan Rockström retweeted
It's not just coincidence that these floods keep happening in Nepal.
In August a glacier gave way on Langtang Lirung and more than 1,400 people died. Then came weeks of deadly rain. Today another river burst through in Gorkha, and 10 people are missing.
This is what a warming planet looks like in the Himalayas.
Nepal produces less than 0.1% of the world's emissions, yet its villages keep paying the price.
Authoritarian nationalism and populism will fail in navigating the depth of the Anthropocene. Our predicament, with turbulent world and unstable Earth requires planetary stewardship not single "strongmen" weforum.org/stories/leadersh… via @wef
Johan Rockström retweeted
It's wild... some people on this site still try to claim that the pictures of declining montane glaciers are merely a result of photographic manipulation using perspective. A kind of climate denial - failure to accept that Earth's cryosphere really is changing rapidly.
Johan Rockström retweeted
Absolutely, nothing to see here. Except a new investigation revealing fossil fuel industry scientists helping write some of the world's most influential climate reports. Because what could possibly go wrong when the industry driving the climate crisis has interests tied to the science informing its solutions?
theguardian.com/environment/…
Johan Rockström retweeted
I often see people claim that because clean energy sources like solar, wind, or nuclear are manufactured using fossil fuels their emissions are high. But thats absolutely not the case: even accounting for full lifecycle emissions they are vastly better than burning coal or gas:
Johan Rockström retweeted
The two most recent strong El Niño events produced record-breaking fire seasons in Brazil.
In both 2016 and 2024, fires burned more than 2.3 million hectares of forest in the country, more than 4 times the annual average from 2001 to 2025.
So, how can a 'Super El Niño' affect water, food and forests?
WRI experts answer👉 go.wri.org/el-nino-impacts-t…
Johan Rockström retweeted
🆕The State of the World’s Mangroves Report 2026 is out now! 🌿
PIK's Alina Bill-Weilandt authored the section proposing financial instruments that could provide additional resources to protect, sustainably manage, and restore mangroves.
Read the report: mangrovealliance.org/mangrov…
Johan Rockström retweeted
Records come and records go. But this is one for the ages.
The preliminary Nino 3.4 sea-surface temperature anomaly is now at a record 3.23°C above the 1991-2020 baseline. This crushes the previous daily record set in 1982 by over 1.14°C.
The Climate 8-ball is looking up.
Johan Rockström retweeted
France’s ongoing drought has once again pushed soil moisture further below historical levels than any previously recorded drought.
Uncharted territory.
Johan Rockström retweeted
"The escalating demand for electricity in the world is being met through these fossil free energy systems but we're not getting off coal, oil and gas fast enough. That's the dilemma," says PIK director @jrockstrom in The Climate Question.
Full episode: bbc.com/audio/play/w3ct99j2