Population & The World Food Supply Can we grow enough food to feed ourselves?
Today in the world:  <ul><li>A child dies of hunger-related causes  every 5 seconds, 16,000 per day </li></ul><ul><li>1/3 ...
Is there enough food?  <ul><li>Worldwide? </li></ul><ul><li>Locally?  </li></ul>
Land and Agriculture What other factors affect the ability of an area to feed itself?  11% .25 15,041,030 6,030,000 137,22...
World Hunger Map
Other side of the coin:  The Average American <ul><li>126lbs of potatoes </li></ul><ul><li>95lbs of vegetables </li></ul><...
Will food be our limiting factor? Is hunger a local or global issue? Is carrying capacity local or global? Will we neatly ...
Remember “Oh Deer”?  Predicting the future…
Thomas Malthus <ul><li>Essay on the principle of population, 1798 </li></ul><ul><li>Two postula: </li></ul><ul><li>Assumpt...
Malthusian Crisis <ul><li>Exponential vs linear </li></ul><ul><li>Population growth --> faster and faster </li></ul><ul><l...
Modernizing <ul><li>What can you do to grow more food in a community?  </li></ul><ul><li>Use more land    sacrifice biodi...
Industrial Farming Innovations <ul><li>Fertilizer  </li></ul><ul><li>Mechanized farming </li></ul><ul><li>Irrigation </li>...
What is the responsible choice?  Modern Farming Organic Farming
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Hunger 09

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Hunger 09

  1. 1. Population & The World Food Supply Can we grow enough food to feed ourselves?
  2. 2. Today in the world: <ul><li>A child dies of hunger-related causes every 5 seconds, 16,000 per day </li></ul><ul><li>1/3 of the world’s population is undernourished, 1/3 malnourished, 1/3 well fed </li></ul><ul><li>Nearly 1 in 4 people live in abject poverty, surviving on <$1 per day </li></ul><ul><li>Starvation is not the only cause of death for malnourished people. </li></ul>
  3. 3. Is there enough food? <ul><li>Worldwide? </li></ul><ul><li>Locally? </li></ul>
  4. 4. Land and Agriculture What other factors affect the ability of an area to feed itself? 11% .25 15,041,030 6,030,000 137,228,159 World 6% 1.74 521,480 30,000,000 8,821,001 Australia 30% .39 3,112,050 800,000,000 10,530,798 Europe 9% .32 1,595,940 500,000,000 17,815,501 S. America 9% .75 2,247,000 300,000,000 24,680,444 N. America 9% .34 2,737,040 800,000,000 30,343,717 Africa 11% .13 4,827,520 3,600,000,000 45,036,697 Asia % of land for crops Crop land per person Crop area population Land area location
  5. 5. World Hunger Map
  6. 6. Other side of the coin: The Average American <ul><li>126lbs of potatoes </li></ul><ul><li>95lbs of vegetables </li></ul><ul><li>92 lbs of fruit </li></ul><ul><li>112lbs of red meat </li></ul><ul><li>233 lbs milk cream </li></ul><ul><li>Survival ~300lbs of grain </li></ul>
  7. 7. Will food be our limiting factor? Is hunger a local or global issue? Is carrying capacity local or global? Will we neatly rise to our carrying capacity then stop?
  8. 8. Remember “Oh Deer”? Predicting the future…
  9. 9. Thomas Malthus <ul><li>Essay on the principle of population, 1798 </li></ul><ul><li>Two postula: </li></ul><ul><li>Assumption: </li></ul>&quot;The power of population is so superior to the power of the earth to produce subsistence for man, that premature death must in some shape or other visit the human race. The vices of mankind are active and able ministers of depopulation. They are the precursors in the great army of destruction, and often finish the dreadful work themselves. But should they fail in this war of extermination, sickly seasons, epidemics, pestilence, and plague advance in terrific array, and sweep off their thousands and tens of thousands. Should success be still incomplete, gigantic inevitable famine stalks in the rear, and with one mighty blow levels the population with the food of the world.&quot;
  10. 10. Malthusian Crisis <ul><li>Exponential vs linear </li></ul><ul><li>Population growth --> faster and faster </li></ul><ul><li>Increase in food supply --> slower and slower </li></ul><ul><li>Role of technology? </li></ul>
  11. 11. Modernizing <ul><li>What can you do to grow more food in a community? </li></ul><ul><li>Use more land  sacrifice biodiversity </li></ul><ul><li>Use the same amount of land but … </li></ul>
  12. 12. Industrial Farming Innovations <ul><li>Fertilizer </li></ul><ul><li>Mechanized farming </li></ul><ul><li>Irrigation </li></ul><ul><li>Genetic modification </li></ul><ul><li>What are the good and bad consequences of these practices? </li></ul>
  13. 13. What is the responsible choice? Modern Farming Organic Farming

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