Gianneschi and his team found that the synthetic melanin nanoparticles in their experiments were not only
absorbed and distributed
normally by the keratinocytes in the epidermis, but they also protected human skin cells from UV
radiation damage.
ie does a slightly lower density of air mean a slightly lower ground level temperature (temperature
normally decreases with height at the lower air density), so that in reality adding CO2 and subtracting more O2 actually causes miniscule or trivial global COOLING, and the (unused) ability of the changed atmosphere to
absorb radiation energy and transmit it to the rest of the air is overruled or limited by the ideal gas law?