Florian Ulrich Jehn does research in food security, climate impacts, and civilizational resilience. Following a PhD in Hydrology, Florian’s research expanded to extreme climate change scenarios and famine prevention after global catastrophes. Beyond academic research, Florian writes the newsletter “Existential Crunch” about societal collapse and gives public lectures on food security and climate change.
'SELECT SQL_CALC_FOUND_ROWS wp_posts.ID
FROM wp_posts INNER JOIN wp_postmeta ON ( wp_posts.ID = wp_postmeta.post_id )
WHERE 1=1 AND (
wp_posts.ID NOT IN (
SELECT object_id
FROM wp_term_relationships
WHERE term_taxonomy_id IN (47485,47486)
)
) AND (
(
( wp_postmeta.meta_key = \'the_author\' AND wp_postmeta.meta_value = \'3513349\' )
OR
( wp_postmeta.meta_key = \'secondary_author\' AND wp_postmeta.meta_value LIKE \'{5fff387a23625c4b7245de84efac403849901c772be6fd753ca1ca435a798ff6}\\"3513349\\"{5fff387a23625c4b7245de84efac403849901c772be6fd753ca1ca435a798ff6}\' )
)
) AND wp_posts.post_type = \'post\' AND ((wp_posts.post_status = \'publish\'))
GROUP BY wp_posts.ID
ORDER BY wp_posts.post_date DESC
LIMIT 0, 6'
What could go wrong?
Things caused by humanity can probably also be solved by humanity. A good place to start seems to be to make sure that the risks we face are more consistently included in things like national risk assessments or global policy making, so that we can better explore what might be done about them.
July 16, 2025
Reform or ruin
When we talk about societal collapse, we usually talk about the factors that led to the collapse of a given civilization. However, you could also turn this around and ask what factors allow civilizations to avoid societal collapse and major crises.
June 2, 2025
