"American UBI: for and against"
"A brief history of Rosicrucianism & the Invisible College"
"Were almost all the signers of the Declaration of Independence high-degree Freemasons?"
"Have malaria case rates gone down in areas where AMF did big bednet distributions?"
"What is the relationship between economic development and mental health? Is there a margin at which further development decreases mental health?"
"Literature review: Dunbar's number"
"Why is Rwanda outperforming other African nations?"
"The longtermist case for animal welfare"
"Philosopher-Kings: why wise governance is important for the longterm future"
"Case studies: when has democracy outperform technocracy? (and vice versa)"
"Examining the tradeoff between coordination and coercion"
"Spiritual practice as an EA cause area"
"Tools for thought as an EA cause area"
"Is strong, ubiquitous encryption a net positive?"
"How important are coral reefs to ocean health? How can they be protected?"
"What role does the Amazon rainforest play in regulating the North American biosphere?"
"What can the US do to protect the Amazon from Bolsonaro?"
"Can the Singaporean governance model scale?"
"Is EA complacent?"
"Flow-through effects of widespread addiction"
On 2, see this post (a link post for this).
I also left some comments on the EA Forum post pulling out the first two theorems and the definitions to state them in way that's hopefully a bit more accessible, skipping some unnecessary jargon and introducing notation only just before it's used, rather than at the start so you have to jump back. They're still pretty technical, though. Upon reflection, it probably took me more time to write the comments than it'll save people to read my comments instead of reading the parts of the paper where they're found. :/
There are also several other theorems in that paper.