“The U.S. per-capita energy usage is roughly five times the current global average. To bring 7 billion people to the same standard would require five times the current scale. Completion of a global demographic transition would roughly double the current world population so that the total increase in energy would be a factor of ten. Therefore, if all countries on Earth were to live at a first-world standard, it would require an effective human population of 70 billion people.” At a constant energy growth rate of 2.3% per year, the temperature climb from waste heat (not CO2 emissions) is slow at first, but becomes preposterous within a few-hundred years. Water boils in just over 400 years, and by 900 years Earth is hotter than the sun! The scenario of continued growth is obviously absurd. 😱 I’ll share more 😳 graphs from this textbook in #Data is beautiful and #ScholER This is the review that got me into it - https://indica.medium.com..