Week 8: Water, Food, Malnutrition

Week 8: Water, Food, Malnutrition

1. Water availability

2. Water availability

   • Increasing demand for irrigation, industrialization, domestic use
   • Future
     • Higher demand, less supply - less water availability

3. Water Stress

   • Physical water stress
     • Physical access is limited; scarcity occurs when resources don't meet demand
   • Economic water stress
     • Water present but require economic resources that aren't

4. Day Zero

   • The day where water reserves drop to minimum level to sustain critical services
   • Regulating water use, rationing, reusing water

5. Water Quality Issues

   • Harmful algal blooms
     • Population explosion of toxic algal caused by excess nutrients
       • Toxic, produces neurotoxins
     • Increase temperatures increase rate and growth of toxic algae
   • Precipitation and temperature changes affect quantity and quality of water
     • Contaminates water, increases water-related illnesses
   • Climate Influence
     • Increase precipitation increases runoff, increasing risk to contaminated water

6. Agriculture

   • Agriculture Revolution
     • Shift from foraging to farming - predictable food source, development of villages, raises earth's carrying capacity
   • Green Revolution
     • Increase agriculture production through high-yield crop varities, fertilizers, pesticides
   • Impacts
     • GHG emissions, high water use, water pollution, air pollution, soil erosion, etc.
     • Increase food production
     • Declines ecosystems ability crop productivity, food scarcity
   • Solutions
     • Eating less meat
     • GMO's
     • Flour-like protein powder made from CO2, H2O and electricity

7. Undernourishment and Food Insecurity

   • Climate impacts
     • Quantity and quality of food harvest
     • Threatens food production
   • Threats to food insecurity
     • Poverty
     • Higher food prices
     • Agriculture stress