• A Nature Communications paper demonstrates dynamic-NMR field sensing with part-per-trillion resolution, enabling ultra-precise magnetic mapping for neuroscience and materials science.  
• A companion Nature Communications study introduces “molecular imaging with engineered physiology”: engineered CGRP variants trigger vasodilation to create endogenous MRI/optical contrast without traditional agents, leveraging the brain’s 13 µm vessel spacing and receptor-mediated transcytosis for BBB delivery.  
• Participants debate whether indefinite life-extension is compatible with finite planetary resources; arguments range from UN population-leveling projections to warnings of mineral depletion, methane-clathrate feedback, and a Pacific plastic mass larger than Texas.  
• Marshall Brain’s short story “Manna” (marshallbrain.com/manna1.htm) is highlighted as a cautionary tale of automation concentrating wealth; James Albus’s “People’s Capitalism” proposal is floated as a hedge-fund dividend model to redistribute automation gains.  
• John McCarthy’s essay “The Economics of Progress” (www-formal.stanford.edu/jmc/progress/economics.html) is cited to counter mineral-scarcity pessimism, while others advocate rapid nuclear build-out and Allan Savory’s holistic grazing to reverse desertification.  
• Concerns are raised that longevity tech without safeguards could entrench despots (e.g., a thousand-year Stalin) and exacerbate inequality; fenn argues longer lives could foster environmental stewardship by preserving ecological memory.  
• A Foundation for Economic Education article on Herbert Dow’s early-20th-century predatory-pricing tactics is shared as a historical case study in industrial strategy.