"Whether this is because of improved balance in immune function, similar to what we report with sepsis, remains to be proven but perhaps requires further study, " Dr Knoell said.

BBC: Zinc 'keeps immune system in check'

It is the most abundant peptide in our brain, affecting everything from heart function to sodium balance.

WSJ: Looking Beyond Oxytocin, the Love Drug | Marvels

"Polar sea ice has an important function in moderating the global energy balance, " he said.

BBC: Record ice loss in Arctic

Certainly it was a function of his concern for his nation and his recognition that our very existence hung in the balance.

CENTERFORSECURITYPOLICY: Professor Netanyahu's lessons