- A New Scientist article was shared about the discovery of an “on/off switch for consciousness” deep in the brain, stimulating discussion on the neural basis of awareness.  
- Detailed cryopreservation protocol excerpt was posted, listing the exact extracorporeal priming solution (Dextran 40, Plasmalyte, bicarbonate, heparin) and cooling parameters used to reach 12 °C in ~20 min, with a question about whether fluorohexasolvent should have been included.  
- ThomasEgi recounted his open-source neuro-feedback project: an ATTiny-based discrete DAC driving skin-stimulation feedback; it worked on the bench but missed power targets because floating CMOS inputs drew excess current—he shelved it after seeing superior academic results.  
- A low-cost cortisol-measurement system that interfaces with smartphones was linked, highlighting DIY health-tracking hardware.  
- nmz787 uploaded two papers: “Miniaturized integration of a fluorescence microscope” and “First-Best Equilibrium in Insurance Markets with Transaction Costs and Heterogeneity,” expanding the channel’s open-access library.  
- kanzure shared “The Little Manual of API Design” PDF and a GitHub Scala order-matching engine, illustrating ongoing interest in software architecture for bio-/fintech tools.  
- CSS layout help was requested and solved for embedding an Octopart iframe in a fixed header, showing practical web-dev work around open-hardware BOM tools.  
- jrayhawk_ noted a sale on grass-fed tallow, a minor but recurring theme of sourcing high-quality fats for DIY biology or ketogenic experiments.