Lightnews — Scholar-powered news

Reposted by Sara Vicca

The New Yorker @newyorker.com · 8d

Today’s Daily Cartoon, by Brendan Loper. #NewYorkerCartoons

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Reposted by Sara Vicca

IIASA @iiasa.ac.at · 9d

🧵 As the #OvershootConference drew to a close today, the final plenary offered a space to step back and reflect across themes. What stood out was both the urgency and interconnectedness of the challenges we face when confronting climate overshoot:

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Reposted by Sara Vicca

esaclimate @esaclimate.bsky.social · 11d

🚨 4 Earth systems approaching tipping points: All have lost stability in recent decades, moving closer to critical thresholds.
⚠️ But early warning is hindered by tipping element interactions
tinyurl.com/d6bwwbpn
@nature.com

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Reposted by Sara Vicca

IOB - Institute of Development Policy @iobua.bsky.social · 11d

🌍 1,555 voices for IOB — but we need more! Every day counts: sign the petition and share it widely so our message to policymakers grows stronger. 💙
👉 https://chng.it/8DhtrFSBpm

#SaveIOB #StandWithIOB #IOBCommunity #GlobalEducation #GlobalSolidarity

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PIK_climate @pik-potsdam.bsky.social · 17d

Seven of nine planetary boundaries now breached – ocean acidification joins the danger zone," says PIK director Johan Rockström presenting the key findings of the Planetary Health Check 2025 today. #PlanetaryBoundaries
➡️ www.pik-potsdam.de/en/news/late...

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IOB - Institute of Development Policy @iobua.bsky.social · 18d

The Flemish government’s unexpected decision not to renew IOB’s agreement puts €2.64M funding, 32 jobs, key programmes and global partnerships at risk. Support us! https://bit.ly/saveIOB

#saveIOB #developmentpolicy #developmentpolicy #iobcommunity

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Sara Vicca @saravicca.bsky.social · 26d

43 miljard euro aan verliezen voor Europese economie door hittegolven, droogtes en overstromingen in zomer '25.
Macro-economische kosten zouden tegen 2029 kunnen oplopen tot 126 miljard euro.
En dit zijn waarschijnlijk nog onderschattingen.
www.vrt.be/vrtnws/nl/20...

Extreem weer afgelopen zomer kost Europese economie 43 miljard euro | VRT NWS: nieuws

De hittegolven, droogtes en overstromingen die de zomer dit jaar teisterden, hebben geleid tot 43 miljard euro aan verliezen voor de Europese economie. Dat blijkt uit een studie van de universiteit va...

www.vrt.be

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Reposted by Sara Vicca

Nature Portfolio @natureportfolio.nature.com · Sep 11

A paper in Nature suggests a quarter of heatwave events from 2000-23 would have been near impossible without anthropogenic climate change. The paper also indicates that major carbon emitters are responsible for around 50% of the increase in intensity of these events. ⚒️ 🧪

Systematic attribution of heatwaves to the emissions of carbon majors - Nature

Climate change made 213 historical heatwaves reported over 2000–2023 more likely and more intense, to which each of the 180 carbon majors (fossil fuel and cement producers) substantially contributed.

go.nature.com

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Sara Vicca @saravicca.bsky.social · Sep 9

We are organizing a session on The biogeochemistry of Enhanced Mineral Weathering at BIOGEOMON 2026!
📍 Umeå, Sweden | 📅 June 8–11, 2026

Conference theme: “Ecosystems in Transition” — exploring the dynamic changes shaping our natural world.

www.slu.se/biogeomon2026

#EnhancedWeathering #ERW

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Joeri Rogelj @joerirogelj.bsky.social · Sep 3

NEW STUDY: How much CO2 can we safely store in geological formations?

In a new @nature.com study, we cross-check established academic and industry estimates with various risk factors.

We find a prudent geological CO2 storage limit that is about 10x smaller. /1

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Sara Vicca @saravicca.bsky.social · Sep 1

Bomen planten is geen magische klimaatoplossing. De impact is veel beperkter dan vaak wordt aangenomen.
- Minder land beschikbaar dan gedacht.
- CO₂ opslag veel kleiner dan uitstoot.
- Ontbossing stoppen = meer klimaatwinst dan nieuwe bossen aanleggen.

globalchangeecology.blog/2025/08/29/b...

Bomen planten als klimaatoplossing? Het verhaal is minder rooskleurig dan gedacht

Het idee klinkt aantrekkelijk simpel: plant zoveel mogelijk bomen en laat de natuur ons klimaatprobleem oplossen. Bossen nemen immers CO₂ op uit de lucht en slaan die op in hout en in de bodem. Gee…

globalchangeecology.blog

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Reposted by Sara Vicca

Pep Canadell @pepcanadell.bsky.social · Aug 29

New assessment on the biophysical potential of forestation to sequester carbon. As expected, we found just a fraction of what other assessments found, because we considered the obvious no-nos, such as risk to biodiversity, excess water use, and regional warming.

theconversation.com/the-climate-...

The climate case for planting trees has been overhyped — but it’s not too late to fix it

Reforestation can contribute significantly to tackling climate change, but research found its global potential is only a fraction of what’s been claimed.

theconversation.com

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Reposted by Sara Vicca

Prof. Vigdis Vandvik @vvandvik.bsky.social · Aug 28

Come work with us!

Fully funded #PhD position in global change ecology - working in a cross-disciplinary cohort of 8 PhD students studying mountains in transition. 🧪🌐🏔️ @btwnthefjords-uib.bsky.social @cesam-uib.bsky.social

www.jobbnorge.no/en/available...

PhD Research Fellow in global change ecology (285493) | University of Bergen

Job title: PhD Research Fellow in global change ecology (285493), Employer: University of Bergen, Deadline: Wednesday, October 1, 2025

www.jobbnorge.no

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Reposted by Sara Vicca

Global Change Biology @globalchangebio.bsky.social · Aug 13

Enhanced Rock Weathering Altered Soil Organic Carbon Fluxes in a Plant Trial

🔗 buff.ly/iXULGZ4
@boitolucilla.bsky.social

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Reposted by Sara Vicca

Global Change Biology @globalchangebio.bsky.social · Aug 8

Beyond Inorganic C: Soil Organic C as a Key Pathway for Carbon Sequestration in Enhanced Weathering

🔗 buff.ly/u81eaGx

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Sara Vicca @saravicca.bsky.social · Aug 5

📢New @globalchangebio.bsky.social
#EnhancedWeathering alters soil organic carbon in complex ways.
Effects are mediated by biota & soil moisture.
Robust #CDR assessments require considering organic carbon.
@boitolucilla.bsky.social
@arthurvienne.bsky.social
onlinelibrary.wiley.com/doi/10.1111/...

onlinelibrary.wiley.com

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Reposted by Sara Vicca

Prof. Stefan Rahmstorf @rahmstorf.bsky.social · Jul 25

I normally post on climate science, which is my expertise.
But this is too important to look away, so I want to share this from the Washington Post. Please read.
www.washingtonpost.com/world/2025/0...

Column | As Gaza starves, Israel’s far right sees a dream coming true

Members of Israel’s government embrace the Trump-inspired vision of a Gaza of gleaming towers, ritzy tourism and pristine neighborhoods, but without Palestinians.

www.washingtonpost.com

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Sara Vicca @saravicca.bsky.social · Jul 23

📢Just out
@globalchangebio.bsky.social: Soil organic carbon (SOC) is key for #enhancedweathering. We found negligible inorganic CO₂ removal, but considerable SOC storage potential. @boitolucilla.bsky.social @arthurvienne.bsky.social @patrickfrings.bsky.social
onlinelibrary.wiley.com/doi/10.1111/...

Beyond Inorganic C: Soil Organic C as a Key Pathway for Carbon Sequestration in Enhanced Weathering

Enhanced weathering involves spreading crushed silicates on soils. Upon weathering of the applied silicates, CO2 is captured via two pathways: pedogenic carbonate formation and leaching of bicarbonat....

onlinelibrary.wiley.com

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Reposted by Sara Vicca

Prof. Stefan Rahmstorf @rahmstorf.bsky.social · Jul 12

We see here a self-styled "honest broker" with decades of experience in downplaying climate change presenting an age-old climate denial trope: using *annual* rainfall data as argument against an increase in *extreme* rainfall.
Does he *really* not know better? Or assume his readers won't?
🧵1/5

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Reposted by Sara Vicca

Sam Burgess @oceanterra.org · Jul 10

Heatwaves in June 2025 were intensified by record breaking Mediterranean temperatures more than 5°C above average

Impacts of marine #heatwaves:
🪸🐠 heat stress in marine ecosystems
🌊 📉 reduce oxygen levels effecting ocean industries
🥵 Increase humidity, ⬆️ heat stress for people
➕many more

Daily sea surface temperature anomaly (°C) on 30 June 2025 relative to the average for the 1991–2020 reference period highlighting a marine heatwave in the western Mediterranean Sea. The dashed box shows the domain used to compute the time series shown in the figure below. Data source: ERA5. Credit: C3S/ECMWF.

Daily sea surface temperature anomalies (°C) averaged over the western Mediterranean basin from 1979 to 30 June 2025. The year 2025 is highlighted in dark red and 2023 in light red. All other years are shown in grey. The western Mediterranean domain (1°W–15°E, 33–46°N) used to compute the time series is shown in the map above. Data source: ERA5. Credit: C3S/ECMWF.

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Reposted by Sara Vicca

Carbon Brief @carbonbrief.org · Jul 8

NEW – Tipping points: Window to avoid irreversible climate impacts is ‘rapidly closing’ | @ceciliakeating.carbonbrief.org @rtmcswee.carbonbrief.org @ayeshatandon.carbonbrief.org @gsiexeter.bsky.social @pik-potsdam.bsky.social

Read here: buff.ly/ECWvN3z

The Global Tipping Points Conference 2025. Credit: Jim Wileman / University of Exeter

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Reposted by Sara Vicca

Viktoria Spaiser @viktoriaspaiser.bsky.social · Jul 10

Here is a great summary of the #GlobalTippingPoints Conference 2025 in Exeter by @carbonbrief.org: www.carbonbrief.org/tipping-poin...
The conference was a call for action as we head towards #COP30 at which the 2nd updated Global Tipping Points Report will be launched

Tipping points: Window to avoid irreversible climate impacts is 'rapidly closing' - Carbon Brief

In the midst of a record-breaking heatwave in Europe, the UK city of Exeter recently...

www.carbonbrief.org

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Reposted by Sara Vicca

Michael E. Mann @michaelemann.bsky.social · Jun 16

Ours is the first study to demonstrate an historical increase (by a factor of three!) in the occurrence of atmospheric resonance, which is associated with many of the most devastating and deadly persistent summer weather extremes in recent years (e.g. Pacific Northwest Heat Dome of summer '21) 🧵

Michael E. Mann @michaelemann.bsky.social · Jun 16

"Increased frequency of planetary wave resonance events over the past half-century" | Our new article in @pnas.org by @xuekeli.bsky.social, @michaelfwehner.bsky.social, Shannon Christiansen & yours truly: www.pnas.org/doi/10.1073/...

Increased frequency of planetary wave resonance events over the past half-century | PNAS

We demonstrate a tripling in the frequency of planetary wave resonance events over the past halfcentury, coinciding with the rise in persistent bor...

www.pnas.org

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Reposted by Sara Vicca

Euractiv @euractiv.com · Jul 2

What a 90% emissions cut could mean for EU citizens

A web of policy signals, investment choices, and support measures will ultimately determine the final cost for households and industry.

dlvr.it

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Reposted by Sara Vicca

Zeke Hausfather @hausfath.bsky.social · Jun 30

Is global warming accelerating? Over at The Climate Brink I argue that the consilience of evidence from surface temperatures, climate models, forcing changes, ocean heat content, and earth energy imbalance all point toward yes: www.theclimatebrink....

The great acceleration debate

Why the consilience of evidence points toward acceleration

www.theclimatebrink.com

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