The commenting prizes incentivized lots of great reasoning sharing rather than silent predictions, and I'm excited to hear which ideas are chosen
For forecasting prizes, requiring currencies benefits those who bet more over those who strictly forecast better. I borrowed hundreds of USD of Manifold's currency to bet more on the tournament:
https://manifold.markets/group/ce-2023-top-ideas/leaderboards
whereas other tournaments are more strictly based on forecasting:
https://salemcenter.manifold.markets/
https://www.metaculus.com/tournaments/
Also probably could get more traders if Manifold itself highlighted tournaments in a banner/sidebar/notification/email/etc. Expect the markets would not have all had less than 50 traders if more users knew thousands of additional USD were at stake:
https://manifold.markets/CE?tab=markets
https://manifold.markets/stats
Wider list if anyone's curious what's after mosquitos and snakes:
https://en.wikipedia.org/wiki/List_of_deadliest_animals_to_humans
There are public biotech companies with ~$10B valuations and higher price/sales ratios: https://finviz.com/screener.ashx?v=121&f=cap_midover&o=-ps
And private valuations are much more generous than public valuations
As evidence increases for cognitive effects of poor air quality:
https://patrickcollison.com/pollution
There may be initial opportunities for extra impact by prioritizing monitoring and improving air quality in important decision-making buildings like government buildings, headquarters, etc
I wouldn't assume this to be stable. Also, verification is currently only available in 18 countries: https://worldcoin.org/find-orb