What if Our Muscles Were Less Powerful?

ATP, blood, charcoal, circulatory system, Energy, Fire-Maker series, heart, human body, Intelligent Design, kilns, medical school, metabolic energy, metallurgy, miniature human, molecular motor, muscle tissues, muscles, myosin, oxygen, respiration, respiratory system, strength, twigs, wood
As every medical student comes to learn when first dissecting the human body at medical school, our limbs are almost entirely composed of muscles. Source
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For a Technological Civilization, We Must Have Metals

ambient temperatures, atmosphere, beams, copper, ductility, earth, electric age, electric generators, electric motors, electrical conductivity, electrical power, electricity, fire, Fire-Maker series, girders, industrial society, Intelligent Design, Maya, metals, respiration, steel, Technology, tensile strength
It is very doubtful that any beings in the universe could develop a civilization remotely comparable with our own without the use of metals. Source
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By Design, Earth Is a Planet Fit for Fire

ambient conditions, atmosphere, atmospheric pressure, civilization, combustion, Douglas Drysdale, earth, Edward McHale, fire, fire spread, fire sustainability, Fire-Maker series, gases, gravity, Intelligent Design, mankind, metabolism, metals, Mount Everest, NASA, nitrogen, oxidative metabolism, oxygen, Physics, Earth & Space, respiration, Stone Age, Technology
As we have seen so far in this series, fire was an absolutely crucial component in humanity’s rise to civilization and technology. Source
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