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11,491 facts. Click any fact to see its full page.
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📜 History 1,991
🔬 Science 1,964
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🧠 Psychology 893
🌿 Nature 759
💻 Technology 735
🌍 Geography 599
🎭 Culture 581
🫀 Human Body 572
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💬 Language 245
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✨ General 68
✨ Dinosaur 10
Human running capacity — persistence hunting — is unique among primates and was a key early hunting strategy.
Skin color is a recent adaptation — dark skin evolved in Africa, lighter skin in northern latitudes for vitamin D synthesis.
The Neanderthal genome shows they had the same FOXP2 variant as modern humans — suggesting language capacity.
Genetic testing has overturned many historical narratives — including showing extensive pre-Columbian contact between peoples.
Sexual selection drives the evolution of traits that improve mating success but may reduce survival.
Human birth is uniquely difficult among primates — babies must rotate as they pass through the birth canal.
The appendix is now believed to have immune functions — not just a vestigial structure.
Convergent evolution occurs when unrelated species independently evolve similar traits — eyes evolved independently 40+ times.
Y chromosome evidence confirms that genghis Khan has 16 million direct male-line descendants alive today.
The MHC (major histocompatibility complex) region of the genome is the most variable in the human genome.
Genetic evidence shows that all modern humans outside Africa passed through a population bottleneck ~60,000 years ago.
Domesticated dogs diverged from wolves at least 15,000 years ago — through human-directed selection.
Ancient DNA has revealed that Europeans get their light skin from hunter-gatherer populations in the Middle East relatively recently.
The sickle cell allele provides malaria resistance when inherited from one parent — a classic balanced polymorphism.
Lactase persistence — the ability to digest milk as an adult — evolved independently at least 5 times in different human populations.
All humans are about 99.9% genetically identical — but that 0.1% accounts for enormous variation.
Genetic drift — random changes in allele frequency — is more powerful than natural selection in small populations.
Epigenetics allows experience to alter gene expression — without changing the DNA sequence.
The FOXP2 gene — sometimes called the 'language gene' — is involved in fine motor control of speech.
Eye color is determined by at least 16 different genes — not just two as commonly taught.
About 8% of the human genome consists of endogenous retroviruses — remnants of ancient viral infections.
The human genome contains 20,000–25,000 protein-coding genes — about the same as a roundworm.
Humans and chimpanzees share 98.7% of their DNA — but have vastly different gene expression.
The spoils system — awarding government jobs to political allies — was replaced by the civil service in the late 19th century.
The European Parliament is the world's only directly elected supranational legislature.
Social movements consistently produce policy changes when sustained over years — the civil rights movement is the clearest example.
The concept of state sovereignty — that governments have absolute authority within their borders — has been challenged by humanitarian intervention.
Judicial independence is the strongest predictor of rule of law quality across countries.
Comparative politics shows that proportional representation systems have higher voter turnout than majoritarian ones.
The 'overton window' describes the range of ideas considered politically acceptable at a given time — it shifts.
Soft power — influence through culture, values, and diplomacy — often shapes international relations more than military force.
Technocracy — governance by experts rather than elected representatives — has been proposed but rarely implemented fully.
Parliamentary systems can remove leaders more easily than presidential systems — through votes of no confidence.
Campaign finance regulation has been weakened repeatedly in the US — Citizens United (2010) was a landmark case.
The internet has enabled both more democratic participation and more effective authoritarian surveillance.
Populism is not inherently left or right — it frames politics as a struggle between 'the people' and 'corrupt elites.'
The 'democratic peace theory' holds that democracies rarely go to war with each other.
Term limits were debated extensively by the Founders — they chose not to include them in the US Constitution.
Federalism divides power between national and regional governments — enabling policy experimentation.
The social contract theory holds that governments derive authority from the consent of the governed.
Gerrymandering — drawing district boundaries to favor a party — has been practiced since the early US Republic.
Referendums on complex issues often produce inconsistent results — voters support conflicting policies simultaneously.
The concept of human rights emerged gradually — the Universal Declaration was adopted in 1948.
Proportional representation systems produce more diverse legislatures than first-past-the-post systems.
The first constitution in history was the Magna Carta (1215) — though it applied only to barons, not common people.
The veto power in the UN Security Council can be exercised by the US, UK, France, Russia, and China.
Authoritarian regimes are increasing globally — 'democratic backsliding' has been documented in 27 countries since 2000.
The European Union is the world's largest trading bloc — representing about 15% of global GDP.
The world's longest-running democracy is San Marino — founded in 301 AD, it has never been conquered.
The United Nations has 193 member states — only Vatican City, Kosovo, Taiwan, and a few others are not members.