- **Visible-light water manipulation**: 520 nm photons can cleave hydration layers off surfaces via electric-field gradients, offering a wavelength-controllable method for nano-scale water removal and surface engineering.

- **Immunocomputing & DNA malware**: Antibody-generating machinery was proposed as a biological computer capable of mining Bitcoin, sparking debate on DNA-based malware and the urgent need for enzymatic safeguards in DNA synthesis.

- **Stealth reaction chambers**: Empty, silica- or fluoroplastic-lined red-blood-cell shells could be assembled into cubic lattices to host undetectable in-vivo chemistry labs.

- **Coboglobin oxygen carriers**: Cobalt-based “aquaman crystals” could replace hemoglobin, storing 16× more oxygen per mass and enabling hours-long breath-holding or cutaneous respiration, though cobalt regulation remains a hurdle.

- **Mechanical cardiac assist**: A low-power device that simply compresses the failing heart was proposed as an alternative to full artificial hearts, targeting myocardial ischemia—the leading US cause of death.

- **Respirocyte emergency therapy**: Synthetic oxygen-storage crystal–loaded RBCs could be injected as a stop-gap for lung/heart failure, potentially stationed in lymph nodes to avoid capillary blockage.

- **Grey-goo containment**: Heat-dissipation limits growth to quadratic, not exponential, and utility-fog shields could absorb blast energy, radiation, and fallout from tactical nuclear weapons, mitigating grey-goo scenarios.

- **Bone-embedded nanomechanical flywheels**: Proposed for perfect balance and energy storage, plus utility-fog layers that convert thermal and kinetic energy from nuclear blasts into usable grid power.

- **Epigenetic immune reprogramming**: TAK-101 nanoparticles for celiac disease highlighted as a near-term path to reversing autoimmune cascades, despite the field’s nomenclature complexity.

- **Ultra-efficient uranium enrichment**: Advanced nanotech could enable rapid isotope separation from ordinary rock, lowering nuclear-weapon barriers while also accelerating burn-up of nuclear waste and reducing long-term radiotoxicity.