The cost of life is paid in water

(HUGO)

Just a new way of seeing things found by chance in a scientific paper by Arthur Wood and Jennifer Smith, «Universal model for water costs of gas exchange by animals and plants» (2010) Vol.107 No.18 PNAS 8469:

«For terrestrial animals and plants, a fundamental cost of living is water vapor lost to the atmosphere»

Water is the fundamental currency with which one pays to live...