Christian Bunn
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bunncoffee.bsky.social
Christian Bunn
@bunncoffee.bsky.social
Scientist Alliance of Bioversity International and CIAT
#coffee #cocoa #climateaction
#cyclist #WarOnCars
My mom got her E-Bike at 68. Her dream was to join us on trips. She absolutely loves it and now regularly goes with friends. She is even saying that her current car is her last car bc she stopped using it for the most part (train station in walking distance helps).
November 14, 2025 at 9:40 PM
Laut Internet wurde VZ239 1970 geändert um Kinder vor Männern zu schützen?

Was in der Diskussion fehlt ist, dass Männer überwiegend Opfer sind im Verkehr. Die Sicherheitsdiskussion also oft Männerthema, während Frauen von vorneherein nur eingeschränkt am Verkehr teilnehmen aus Angst. #Stadtbild
October 28, 2025 at 8:55 AM
...but also drug production, illegal mining, civil war and violence, child trafficking, illiteracy, and malnutrition. Constant conflict between indigenous communities, afro-descendants, Euro-descendant narco gangs and the Military.

And incredibly beautiful.
October 6, 2025 at 10:59 AM
Third, in interconnected value chains, the impacts may be indirect through market forces.

Adverse impacts in one region may increase prices, leading to exponentially growing costs for procurement, borrowing or insurance.

Adaptation requires anticipation of climateflation.
September 25, 2025 at 1:15 PM
Second, the physical supplies we depend on may be at risk from climate change.

Supply chains may be disrupted at production, storage or transport. Heat spoils quality on the tree or at fermentation, rains lead to mold at warehouses, storms disrupt harbours.

Professional services are needed!
September 25, 2025 at 1:15 PM
First, people and entities have direct exposures.

Our houses, our health, our mobility can be compromised by heat, storms, floods. We need to find ways to secure our most basic needs.

Adaptation requires better personal infrastructure.
September 25, 2025 at 1:15 PM
Climate adaptation is the hard part of climate action. To overcome the technocratic, reductivist view on adaptation, we need a better understanding of processes, systems and there will be no way around talking to people.

Climate adaptation needs to be mainstreamed into human development.
September 25, 2025 at 1:15 PM
The focus on the crop in value chains exacerbates economic power injustice. Buyers with access to finance prioritize crop adaptation over people adaptation, ignoring producers worldviews and through adaptation increase their dependency on the crop.
September 25, 2025 at 1:15 PM
Most importantly, we often have insufficient knowledge about the limits to adaptation. Mal-adaptation often happens when early action results in locked-in exposure to growing hazards.

Stay in or go out? Both have a cost, and both are extremely risky.
September 25, 2025 at 1:15 PM
Usually, we try to adapt the crop and simplify income risk reduction to 'get another job'.

But a plant will still be a plant for the time being and there is only so much that can be done to adapt. Many of the options, like shade trees, have clear downsides for the people working the field.
September 25, 2025 at 1:15 PM
The next step is the identification of risks and the potential impacts, should the risks be real.

Again, which one is it? Do we want to reduce risks, or impacts? This is often not the same.

Agriculture has both a crop and a human factor. Wilting plants harm incomes. Do we adapt plant or income?
September 25, 2025 at 1:15 PM
Hazards are specific events or conditions resulting from climatic changes that have the potential to cause significant risks.

Despite the climate uncertainty, in this step, we have to evaluate the potential to cause significant risks.

But where do our food supplies come from?
September 25, 2025 at 1:15 PM
Climate change is a persistent, identifyable change in the mean and variability.

Ok, so which one is it - changes in the mean or variability? Identification is hard, and what is persistent in a changing climate?

Why do we ignore changes in the continuity of precipitation?
September 25, 2025 at 1:15 PM
The IPCC definition and common guidance (e.g. GCF, BMU, myself) take the identification-response approach. From a purely technical point of view, we should be able to define the risks and then appropriate responses.

The devil is in the fine print.
September 25, 2025 at 1:15 PM
Adaptation to climate change was meant to be the easy part: As easy as 1,2,3 - what will the climate be? what are the risks? do something to reduce the risk!

It is going to rain? Put on a coat and keep enjoying life!

Adaptation increasingly turns out to be much harder than emissions reduction!
September 25, 2025 at 1:15 PM
Now reading - the conventional definition of adaptation as the process adjustment often ignores ambiguity from scales, justice, socio political realities and knowledge pluralisms.

Finally, some food for thought how we move away from a technocratic approach wich disregards people's needs.
September 19, 2025 at 12:32 PM
Ist er nicht immer noch Gutachter für Studienpläne an der Uni Göttingen? Und lehrt die Uni Göttingen in Agrarwissenschaften umfassend zum Thema Klimawandel?

Das ist leider alles andere als harmlos.
August 22, 2025 at 12:43 PM
August 22, 2025 at 12:30 PM
August 22, 2025 at 12:29 PM
Absurd, dass Herr Tiedemann so etwas schreibt.
August 22, 2025 at 11:34 AM
Climate Action is needed to secure a stable future for us and our children.

#Showyourstripes #Göttingen #Hannover

#climateactionnow
June 21, 2025 at 11:58 AM
Kidical Mass Göttingen am 25.5. am neuen Rathaus.
May 13, 2025 at 7:42 PM
Die machen auf sozialen Medien ordentlich Werbung damit, leider mit einem Duktus der Brechreiz hervorruft. In der Sache haben sie Recht, aber leider nutzen sie die Situation um "Linke" zu belehren.
April 7, 2025 at 9:17 AM
The real risk? As cocoa demand rises, producers may clear more forests—fueling the very climate crisis already threatening the crop. Forests protect biodiversity and absorb CO₂. Climate volatility, not CO₂, is reshaping cocoa’s future.
March 25, 2025 at 7:55 AM
Studies show future high CO₂ concentrations could offer some benefit to cocoa trees, ameliorating some of the negative impacts. But recent harvest failures in Ivory Coast and Ghana—caused by bad weather and disease—sent prices soaring to record highs.
March 25, 2025 at 7:55 AM