Dr. David Denkenberger co-founded and is a director at the Alliance to Feed the Earth in Disasters (ALLFED.info) and donates half his income to it. He received his B.S. from Penn State in Engineering Science, his masters from Princeton in Mechanical and Aerospace Engineering, and his Ph.D. from the University of Colorado at Boulder in the Building Systems Program. His dissertation was on an expanded microchannel heat exchanger, which he patented. He is an associate professor at the University of Canterbury in mechanical engineering. He received the National Merit Scholarship, the Barry Goldwater Scholarship, the National Science Foundation Graduate Research Fellowship, is a Penn State distinguished alumnus, and is a registered professional engineer. He has authored or co-authored 156 publications (>5600 citations, >60,000 downloads, h-index = 38, most prolific author in the existential/global catastrophic risk field), including the book Feeding Everyone no Matter What: Managing Food Security after Global Catastrophe. His food work has been featured in over 25 countries, over 300 articles, including Science, Vox, Business Insider, Wikipedia, Deutchlandfunk (German Public Radio online), Discovery Channel Online News, Gizmodo, Phys.org, and Science Daily. He has given interviews on 80,000 Hours podcast (here and here) and Estonian Public Radio, Radio New Zealand, WGBH Radio, Boston, and WCAI Radio on Cape Cod, USA. He has given over 80 external presentations, including ones on food at Harvard University, MIT, Princeton University, University of Cambridge, University of Oxford, Cornell University, University of California Los Angeles, Lawrence Berkeley National Lab, Sandia National Labs, Los Alamos National Lab, Imperial College, Australian National University, and University College London.
I think the key thing to test is when plant based substitutes are significantly cheaper than animal products. The two examples I know of now are margarine and egg replacer. The former got big market penetration (and I think some actual substitution) and the latter didn't. As I've argued elsewhere, we could get plant based burgers to cost parity or better if we built a bigger factory. Then I think there would be some substitution for price sensitive consumers.
Evidence of bumblebees liking and disliking foods depending on context.
What do you think about AI 2040's idea of giving all people an equal slice of the lightcone and allow them to sell theirs? The endowment would extremely roughly give everyone a cut of the Dyson swarm the size of the earth, a star in the Milky Way, and a galaxy. But since the star would typically take thousands of years to reach, it might be better to allow people to sell their galaxy, star, and slice of the Dyson swarm separately. Then the people who value the long-term future could buy most of the stars and galaxies.
Has anyone tried to estimate the social cost of carbon taking into account AI? I've seen several well-calibrated people estimating that there is a 20% probability that AI fizzles in the next few decades. If you believe that that would be permanent and AGI/ASI would solve the climate problem or result in catastrophe, to a first approximation, that would mean the social cost of carbon would be about 1/5 as much as people typically calculate. In reality, AGI/ASI may come further in the future, and there could be some benefits of reduced carbon even with AGI/ASI.
Or we could reclaim eroded soil from rivers (e.g. where they are depositing it into the oceans).
Thanks for citing me! To clarify, it's only about 1% of the land area taken up by the solar energy to make the nitrogen fertilizer - the losses in going from solar energy to nitrogen fertilizer are much more than 1%.
Since doing that podcast, I have found that if we had to meet the current demand for gold and silver from common rock, it might take more than our entire economy to do it. Now as you say, we could substitute, e.g. another metal as a store of value, jewelry substitution, etc. But gold is used in computers because of its resistance to corrosion, which may be hard to substitute for. So it could be a drag on the economy (though I agree, not an existential risk).
That's generally true, though it has been pointed out that an earthquake could cause a lab leak of an engineered pathogen.
Zvi was not so charitable:
It does seem like @William_MacAskill hardly talks about risk in that podcast.
Thanks for linking to this - it is important.
They do mention charitable things that have long lead times, but some others include growing plants in simulated nuclear winter conditions and building factory pilots. I think it’s important to build resilience significantly before AGI because the risk close to AGI of nuclear war and pandemics gets a lot higher.
Some conservationists do bite the bullet of opposing the eradication of disease-carrying mosquitoes. I think those rat strains would typically not be considered a separate species. There is interest in de-extinction, though I don't know if that qualifies as breeding new species. Some people classify domestic dogs as a separate species from wolves, and I think it's interesting to think about how humans could create new species to somewhat compensate for past extinctions.
Thanks for doing an estimate of the long-term impact of ALLFED!
Since ALLFED has not gotten that much money, I would argue that the marginal cost effectiveness should be higher than Buhl's estimate, not 3x lower. Indeed, we are focusing now on pilots that cost a lot less money, but still have similar impact. One example is growing plants in simulated nuclear winter conditions.
For the impact on this century, the AI argued that policy was evaluated, but other things like resilient food pilots have not been evaluated, so it assigned an overall lower cost effectiveness. Now for the long-term future impact, the AI is arguing that resilient food pilots have been quantified, and other things like policy have not, so it is assigning a lower cost effectiveness. I think it's more defensible to assign about the same cost effectiveness across the board (we do try hard at ALLFED to equate the marginal cost effectiveness of different projects we can work on), though I agree it would be best to do a separate cost effectiveness analysis on the biosecurity work.
But the most important thing is that there is a long-term future impact of ALLFED quantified at all, so I appreciate your effort.
Thanks!