ENGR 482 Lecture 21
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Guest lecture by Dr. Holtzapple
Ultra High-Efficiency Engine/Compressor/Expander
Why Are our Environmental Problems a Concern?
- Anthropocentric
- Non-Anthropocentric
Global Mass of Vertebrates on Land and Air
- Humans and our livestock/pet contributions: 95% of all vertebrate contributions
- We really are dominating this planet
Man vs. Nature
- Nature won up until 1900
- Man is currently winning since
- Once we reach carrying capacity, we both lose
More emphasis on ethics between current society and future society, plants, animals, Gaia
Pollution Mitigation
No such thing as zero pollution: logarithmic scale.
Dose/Response scale: LD50 is point at which 50% of population will die if subjected to concentration.
Ethanol's LD50 is 10,000 mg/kg
Nicotine is 1 mg/kg
Body has mechanism to detoxify itself at safe levels.