The Wouk Lecture
Imberger
   
 

Jörg Imberger Life in a Changing Climate

Thousands of years ago human life on earth was in harmony with nature on a 100,000 year cycle, the period between the ice ages; this is when the human mind and body evolved and essentially our genetic design stems from this period. Genetic evidence suggests that the human race evolved from the primate starting around 150,000 years ago,or two ice ages ago; the human DNA was fine tuned during this period. The human that was created was designed to function in harmony with the environment of the time; in the womb the mother programmed the DNA switches to ready the child for the new outside world, in the first 6 months of life the immune system inventory was set up and in the first 6 years or so the brain learned to conform to society's norms and be in relative equilibrium with the immediate environment. The human of the day survived around 30 to 50 years with death, in probabilistic terms occurring through different breakdowns in the functioning of organs and the immune system; life expectancy increased as early failures mechanisms became repairable revealing every newer failures is succession. Over the last 15,000 years, essentially since the last ice age, the functioning humans set up their icons; family, the concept of God, the various cultures and forms of government and the hierarchical ideas of respect for experience. Spirituality was an important part of this evolution, providing the connection between humans, nature and the unknown. Before organized religion came about humans expressed their spirituality through a combination of respect for the unkown, superstition and fear of what was not understood. Hinduism evolved first and may be seen as a transition between simple spirituality and the organized religions; a movement with a minimalist structure. Judaism, the first version of an organized religion, ordered the various expressions of spirituality into a more consistent set of rules, much like laws order community consensus. In simple terms, these rules were simply reflections of the constraints imposed by nature on our evolution and so formed sign posts for living in a way that promoted better survival. However, as the structure became more consolidated, the organizational part of the structure gained in strength. Christianity followed, consolidating the structure even more and people started to interpret the rules to the advantage of humans and, in particular, the church. Islam followed with yet further extension of rules and structures.  In the last 100 years, we have devoted ourselves almost exclusively to "liberating" ourselves from these icons and in the process trashing nature and removing most of our reference points; technology provided the mechanism and the GDP the measure of success for this mission. Technology is pursued to liberate us from the constraints of our reach, and in that it has been singularly successful, but it has resulted in unintended consequences unleashing some very disturbing new feedback mechanisms that are having alarming consequences for the human race:

a) Climate change in now controlled by the increase in hurricanes, the melting of the permafrost and the loss of solubility in the ocean as well as a breakdown of ecological balances.

b) Recent research has shown that our genetic destiny is set in the prenatal period when the stress levels in the mother determines much of the well being of an individuals life; the more stress the mother is under the higher the incidence of pathological behavioral changes in the adult, rendering the resulting society less able to make mature decisions.

c) By changing our environment our immune system is no longer being set up properly, leading to an alarming rise in diseases. This motivates us to further sterilize our environment only making the problem worse.

d) By removing "creative loafing" time from our daily lives, we are getting better at short term decision making, but much less able to cope with holistic problem solving. 

e) Economic growth is fueling the information age that, in turn, is increasing productivity leading to a positive feedback into economic growth; the result is that the GDP of most countries is now growing exponentially and we are totally addicted to consumption, with all the symptoms of clinical addiction.

f) Even more alarming for the human race is that technology has allowed, over the last 15 years, a massive concentration of wealth and power, in the hands of a few, upsetting the fundamental democratic institutions.

g) Our senses no longer match our needs and we compensate by viewing the world through the simplifications of the computer screen, this is having the effect of devaluing nature and its therapeutic influence on human well being. 

The alarming feature of these feedbacks is that they imply that, the climate, our psychological state, the economy and nature's habitat will all move, irrespective of what humans do, to a new unknown state in the time of one human life, all bring a significant imbalance between the human capability and his/her environment. In essence humans, by expanding our reach to global scales through technology, have set up a 50 year global experiment where we are both the observers and the subject and for which we have neither a hypophysis nor an objective; we have put the earth and ourselves in the hands of fate. Not a comfortable experiment for a scientist!

What is to be done? I shall examine some of the more popular ideas such as carbon trading and sequestration and show that these technologies are much less effective than improving food production efficiencies and returning the released land to reforestation. However, an even greater challenge for our Universities is to develop technologies that allow people to participate in society in the face of wealth inequity, declining biodiversity, unbalanced population increases and genetic manipulation. 

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