- Roswell Biotechnologies released a PNAS paper describing a CMOS-compatible molecular-electronics sensor chip that can perform single-molecule measurements of binding kinetics and enzyme activity in real time, with supplementary fabrication details provided.  
- A Nature Communications article was shared on a low-cost, shielding-free ultra-low-field brain MRI scanner that could make neuro-imaging far more accessible.  
- Discussion of orbital economics centered on whether near-Earth asteroids at Lagrange points (L4/L5) offer genuinely low-Δv sources of raw materials compared to launching from Earth’s surface.  
- Cryonics timelines were debated after a tweet claiming the first cryopreserved animal would be revived in 2023 and the first human by 2030, prompting skepticism about the definition of “revival.”  
- John Carlos Baez’s blog post on opaque arXiv gatekeeping practices was circulated, with participants arguing that while peer filtering is necessary, the lack of transparency and accountability is problematic.