- Project Vesta (climate-focused CO₂-removal scheme) is deemed too expensive at an estimated $250 billion per year, with critics noting it is a recurring cost rather than an accumulating investment in capacity.  
- Participants questioned whether any alternative geo-engineering or carbon-capture effort could achieve comparable atmospheric impact for less money.  
- A brief debate on planetary habitability argued that Earth’s atmospheric loss without a magnetic field would increase only modestly, though no quantitative data were offered.  
- A cryonics lawsuit over a father’s frozen head was shared, prompting the view that Alcor should have followed best practices from the outset to avoid legal conflict.  
- DIY lab hardware discussion: an 8 MP “digital magnifying glass” and a €13 USB microscope were showcased for precision soldering and reflow work; users are experimenting with motorized focus and supplemental lighting.  
- DIYHPlusWiki received an update linking to a transcript on blockchain design patterns from the Tel-Aviv 2019 Scaling Bitcoin event.