HIST 122 Lecture Notes - Feedback, Ecological Footprint, Malignancy
Document Summary
The introspective path thought and choice personally, and communally. The explosion: 1950 and hence: 1 billion in 1800s, 6 billion in 200s. Since 1975, population grew by 1 billion every 15 years. 1800-1930, population grew by 4 million = 130 years. Human biomass explosion: at the expense of ecosystems and species. Unprecedented pull on ecosystems: cant be maintained in the long-run. The meaning of human years: 2. 16 trillion years = all the life spans of every hominid in the past 4 million years. 20th century: 1/5 of the entire human years in 0. 00025 part of human history. Storing somatic energy: slavery, controlling people/livestock. Fluctuations: due to famine, natural disasters, etc. Limitations: human limit = 100 watts. Fossil fuel energy regime: post 19th century, dominant form, increase in energy. 1800: 10 million metric tons globally: mostly in gb. Earliest form used to pull water out of coal mines. Efficiency before 1800: 1, 99% of energy wasted.