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Life on earth and in the universe

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Earth formationBeginnings of lifeOzone layer and eukaryotes show up in the Proterozoic eonBiodiversity flourishes in Phanerozoic eonFirst living things on land clarification
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Human evolution overviewUnderstanding calendar notationCorrection calendar notationDevelopment of agriculture and writingFirestick farming in early AustraliaCollective learningThomas Malthus and population growthAgriculture and human populationEnergy inputs for tilling a hectare of landRandom predictions for 2060
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Chronometric revolutionCarbon 14 dating 1Carbon 14 dating 2Potassium-argon (K-Ar) datingK-Ar dating calculation
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Detectable civilizations in our galaxy 1Detectable civilizations in our galaxy 2Detectable civilizations in our galaxy 3Detectable civilizations in our galaxy 4Detectable civilizations in our galaxy 5

About this unit

When and how did life emerge on Earth? How did humanity develop a civilization? Is there other intelligent life out there?