Breath underwater indefinitely by splitting Carbon dioxide in the lungs

Lasers can split the CO2 in the lungs into C and O2.  If the CO2-splitter disposes of the Carbon safely, the O2 would be reused by the erythrocytes' hemoglobin indefinitely.

With proper safety gear for ears, mouth, and eyes, one might "scuba dive" to 500 or more feet indefinitely (until you became hungry).

Some initial research on splitting CO2 using UV-light:

http://phys.org/news/2014-10-oxygen-molecules-carbon-dioxide.html

Cell biology & exocytosis

While pondering how exocytosis works, it occurred to me that "Intersections of magnetic parabolas" potentially explains this phenomenon.

If the overall macro-molecular construct of the cytoplasm/protoplasm, referring to the internal "charge" of the cell within its membranes reaches a point where the synthesis or breakdown (anabolic/catabolic) reactions becomes non-homeostatic, the cell's pressure might push a vacuole to the edge allowing material to escape the pressure.

While that can occur in isolation (within a single cell's walls), there would also be a macro-effect of multiple cells' "charge" that affects a single cell.