- **Marine-electrolysis “seacrete” debate**: Participants dug into 40-year-old papers and recent claims about growing a cement-like mineral on cathodes in seawater; corrected energy figures range from 0.046 kg/kWh (Hilbertz 1979) to ~1 kg/kWh (Goreau 2012), with earlier TMP/LUF reports later shown to be off by a factor of 40 due to a units error.

- **Selective ion-membrane speculation**: docl asked whether biological or synthetic membranes could preferentially pass Fe²⁺/Ni²⁺/Cr³⁺ while rejecting smaller Na⁺/Ca²⁺ to enable in-situ stainless-steel formation; L29Ah pointed to molecular sieves and reverse-osmosis as starting points.

- **COVID-19 evolutionary pressure**: kanzure and fltrz noted that 14-day quarantines may select for SARS-CoV-2 strains with longer incubation periods; jrayhawk added that the already-observed D614G spike-protein mutation improves binding to non-Asian ACE2 variants.

- **High-CBD cannabis extract preprint**: nmz787 shared a preprint (preprints.org/202004.0315/v1) suggesting that certain high-CBD Cannabis sativa extracts down-regulate ACE2 expression in COVID-19 gateway tissues, potentially offering a prophylactic anti-inflammatory strategy.

- **Tooling & data archaeology**: fenn released a link to the archived Living Universe Foundation mailing-list bundle (diyhpl.us/~bryan/irc/luf-team-archive.zip) for researchers wanting to trace the history of seacrete and ocean-colonization experiments.