Most-viewed Guardian articles last night. Editors shouldn’t think that the public doesn’t want to know more about climate change. Or about ocean science 🌊! Read the article about our paper: www.theguardian.com/environment/...

NEW ANALYSIS: What role will CDR play for shipping? Biofuels, onboard CCS, and durable CDR are likely to be cheapest for the majority of emissions. But many roadmaps center around electrofuels, despite them looking like the most expensive alternative, as with aviation.

All emission reductions more expensive than DACCS are hard to abate. That's the proposed definition in this new paper. I agree, and have been arguing for a long time that there is NO need to create a special list of residual emissions... 1/5

The CO2 removal industry is about to hit a milestone: 1 million tons of durable removals. But things are moving too slowly to reach gigaton scale on time. At Carbon Unbound summit last week things felt precarious. One person told me without more buyers the industry is in a “house of delusion.”

I categorically disagree with claims that CO₂ removal (CDR) is a scam. The field is full of smart people dedicated to figuring out what, if anything, works, because we’ll need CDR in the future for legacy and residual emissions. Funding via market mechanisms isn’t ideal, but doesn’t make it a scam.

How many tonnes would the world's biggest CDR buyer be purchasing if they were following the SBTi proposed CDR scale-up requirement? Full article: www.cdr.fyi/blog/zero-vs...

🚨 BREAKING: The just-published draft SBTi Net Zero standard is unlikely to significantly increase demand for CDR. Crucially, CDR targets must include the total CDR needs. 1/9 marginalcarbon.substack.com/p/what-needs...

🚨 BREAKING: The just-published draft SBTi Net Zero standard is unlikely to significantly increase demand for CDR. Crucially, CDR targets must include the total CDR needs. 1/9 marginalcarbon.substack.com/p/what-needs...

Who says fighting climate change can't be fun? Here is a special moment from our last CDRscoop with @sebastianmanhart.bsky.social and @roberthoglund.bsky.social. Enjoy! Full 30-min live session: www.linkedin.com/in/evetamme/... Podcast version: episodes.fm/1790305658

News shocking paper from James Hansen et al “As a result, shutdown of the Atlantic Meridional Overturning Circulation (AMOC) is likely within the next 20-30 years, unless actions are taken to reduce global warming – in contradiction to conclusions of IPCC."

What's behind the like-for-like principle? Lots to unpack. @roberthoglund.bsky.social joins @sebastianmanhart.bsky.social and me for a punchy, insightful, and heated debate on this topic at the next CDR Policy Scoop. Tune in on 5 Feb, 11.30 am CET: www.linkedin.com/events/72919... #CDRscoop

Our CDR.fyi / OPIS CDR Pricing Survey is finally out! Somewhat concerning, the results show a significant gap between suppliers' and buyers' price expectations for almost all methods. I have a lot more to say on this, but I'll save that for the blog post. Link: www.cdr.fyi/blog/cdr-pri...

Our CDR.fyi / OPIS CDR Pricing Survey is finally out! Somewhat concerning, the results show a significant gap between suppliers' and buyers' price expectations for almost all methods. I have a lot more to say on this, but I'll save that for the blog post. Link: www.cdr.fyi/blog/cdr-pri...

I am BEYOND THRILLED to announce that Salesforce has committed $5 million to pre-purchase durable carbon removal credits through Milkywire. This collaboration is part of Salesforce's ambitious $100 million CDR First Movers Coalition pledge. www.milkywire.com/articles/mil...

I've started a research overview of the risk of an AMOC collapse, its potential consequences and what we know about solutions. Would you like to contribute? Comment, and I can give you access. noisy-city-cf3.notion.site/AMOC-Researc...

I've started a research overview of the risk of an AMOC collapse, its potential consequences and what we know about solutions. Would you like to contribute? Comment, and I can give you access. noisy-city-cf3.notion.site/AMOC-Researc...

Planting trees in snow-covered regions is not a great climate solution. We already knew trees reflect less sunlight than snow, contributing to warming (although the effect is complex since forests increase clouds). This new study points to large carbon loss from frozen soils when planting trees

Last chance to get more transparency on durable CDR pricing! CDR.fyi durable CDR pricing survey, run in partnership with OPIS, closes today, December 6. The survey is designed to shed light on pricing expectations for durable CDR LINK: www.cdr.fyi/blog/durable...

“If we're going to count on them to mop up our historical emissions… we can't at the same time use them to offset future fossil fuel emissions.” Carbon markets are just that — markets. Not climate solutions. #climatechaos

Can you visualize a Gt of CO₂? RMI put together a great explainer. See the image for scale. Some highlights: 1 Gt CDR per year would require CAPEX spending of $32B-$1.1T. Huge range, mostly due to rock-based solutions being capex low (but higher opex). Link: rmi.org/what-we-real... 1/4

Can you visualize a Gt of CO₂? RMI put together a great explainer. See the image for scale. Some highlights: 1 Gt CDR per year would require CAPEX spending of $32B-$1.1T. Huge range, mostly due to rock-based solutions being capex low (but higher opex). Link: rmi.org/what-we-real... 1/4

Rerouting 3% of planes could cut contrail warming by 66-80%, achieving ~1% less warming almost instantly. Low cost, slight CO₂ rise, but immediate cooling. Very likely worth it. Several new studies and initiatives recently published 1/3 www.ciphernews.com/articles/red...

Rerouting 3% of planes could cut contrail warming by 66-80%, achieving ~1% less warming almost instantly. Low cost, slight CO₂ rise, but immediate cooling. Very likely worth it. Several new studies and initiatives recently published 1/3 www.ciphernews.com/articles/red...

Emissions reductions and removals are at a very high risk of being too slow to prevent the risk of AMOC collapse. We need a massive research program into acute solutions that could prevent the collapse, including understanding the causes of the weakening in more detail.

Emissions reductions and removals are at a very high risk of being too slow to prevent the risk of AMOC collapse. We need a massive research program into acute solutions that could prevent the collapse, including understanding the causes of the weakening in more detail.

💣 Warming won't stop at net zero if we cheat and count natural CO₂ uptake as target fulfilment, or if we neutralize fossil emissions with shortlived CO₂ storage. A Very important paper in Nature by Myles Allen et al was just released together with a briefing note.

Aviation is betting big on alternative fuels to reach net zero. But is that the best way? @roberthoglund.bsky.social thinks not and suggests storing the CO2 rather than turning it into E-Fuels. I interviewed Robert about this for Sustainability in the Air - green.simpliflying.com/p/carbon-rem...

💣 Warming won't stop at net zero if we cheat and count natural CO₂ uptake as target fulfilment, or if we neutralize fossil emissions with shortlived CO₂ storage. A Very important paper in Nature by Myles Allen et al was just released together with a briefing note.

One of few long-term field studies of Biochar permanence. The results? Points to Biochar being permanent CDR

Game:🎾 2016. Öko-Institut, "85% of CDM credits are non-additional". Set:🏓 2021. The Guardian, "90% of rainforest carbon are worthless" Match:🏆 2024. Net Zero lab, 84% of 1 billion reduction credits don't represent real reductions.

Latest emissions from Global carbon project updates. This is what it looks like when countries' targets are added. Even this rapid phasedown leads to a 576 Gt overshoot of 1.5C. Full dataset from our additional carbon accountability paper available here: zenodo.org/records/1378...

An alternative interpretation is ofc that if a lot of accountability falls on countries unlikely to shoulder it, then 1.5C is dead, and we are unlikely to ever return to it. Unless some countries take way more responsibility for negative emissions than equity says they should.

🚨 HOT OFF THE PRESS: I'm co-author of a new paper quantifying countries' "additional carbon accountability". It shows only 18 countries (incl EU) need to exceed their climate targets to bring temperatures (back) to 1.5°C. 1/10