The ENTIRE History of the World in Two Hours (History Documenntary)

The universe begins as a tiny bundle of energy, smaller than an atom. In a fraction of a second, the Big Bang causes an immense expansion, creating all the energy that will ever exist. This energy fuels stars and, ultimately, all life.

After 380,000 years, the first atoms, primarily hydrogen, are born. Gravity sculpts these atoms into the first galaxies. The principle that 'where there is stuff, new stuff can develop' is introduced, highlighting how complexity arises from concentrated matter and energy.

300 million years after the Big Bang, gravity ignites the first stars. These stars act as element factories, fusing lighter elements into heavier ones like carbon, oxygen, nitrogen, and iron. Heavier elements, like gold and uranium, are forged in the explosive events of supernovas, which are essential for the building blocks of planets and life.

After billions of years of stars evolving and exploding, enough heavy elements accumulate. Roughly 4.6 billion years ago, our sun is born, and then Earth, the third planet, forms. A Mars-sized object collides with Earth, creating the Moon, which stabilizes Earth's tilt, creating seasons and lengthening its days.

As Earth cools, water vapor forms steam in the atmosphere, leading to millions of years of rain that create our oceans. Around 3.8 billion years ago, the first life, simple bacteria, emerges in the primal oceans, utilizing the Big Bang's energy to thrive and eventually produce oxygen.

Two and a half billion years ago, bacteria develop photosynthesis, consuming sunlight and releasing oxygen. This oxygen reacts with iron in the oceans, forming vast deposits of rusted iron on the seafloor, which would later become major sources of iron and steel for human civilization.

By 500 million years ago, bony fish, our direct ancestors, evolve in the seas. The accumulation of oxygen also creates the ozone layer, protecting life from radiation and allowing plants to colonize land first, followed by amphibians around 400 million years ago. The development of shelled eggs allows reptiles to become fully terrestrial, cutting the final ties to water.

300 million years ago, massive tropical swamps form extensive coal deposits. 250 million years ago, the Permian extinction wipes out most species, allowing dinosaurs to rise. Mammals, small and shrew-like, exist on the fringes. 65 million years ago, an asteroid impact causes a mass extinction, ending the dinosaur era and paving the way for mammals, including primates, to diversify.

Early primates with forward-facing eyes and grasping hands evolve. Around 7 million years ago, the widespread appearance of grasslands on Earth forces our ape ancestors to adapt, eventually leading to bipedalism. Hominids begin using silicon rocks to create sharp-edged stone tools 2.6 million years ago, marking the first technological revolution – the Stone Age.

Around 800,000 years ago, Homo sapiens gain control of fire, a skill unique to Earth due to its abundant fuel and oxygen. Fire enables cooking, increasing caloric intake and supporting larger brains. It also serves as a 'gateway technology' for future innovations. 200,000 years ago, the human larynx descends, allowing for complex sounds and language, exponentially increasing our collective intelligence and knowledge sharing.

Following the last Ice Age, humans transition from nomadic hunter-gatherers to settled farmers, spurred by fertile river valleys and the domestication of plants, especially various forms of grass. This agricultural revolution, particularly prominent in the Fertile Crescent with its rich array of domesticable species, leads to human settlements growing into the first cities by 3000 BC, such as Uruk.

Early civilizations thrive on trade, with donkeys facilitating long-distance exchange of goods, ideas, and stories, forming the foundation of global networks. The domestication of horses in Central Asia around 4000 BC provides an unparalleled advantage in work and warfare, profoundly impacting human history as they spread across Eurasia and later return to the Americas with Columbus.

Early civilizations construct massive monuments using materials like bitumen (an ancient form of petroleum). Around 1200 BC, the disruption of copper and tin trade routes leads to the discovery and widespread adoption of iron, marking the beginning of the Iron Age due to its abundance and ease of sharpening.

Starting around 600 BC, the 'Axial Age' sees the emergence of major belief systems and philosophies, including Judaism, Buddhism, Hinduism, Christianity, and Islam. Around 100 BC, the Silk Roads connect China to the Roman Empire, creating an unprecedented network of trade and cultural exchange, though it also facilitates the spread of diseases.

By 1492 AD, the world remains divided between the Eastern and Western Hemispheres. Christopher Columbus's voyage, facilitated by Arab sailing technology and Chinese compasses, permanently connects these two halves. This leads to the Columbian Exchange, integrating new foods into global diets, but also resulting in the devastating impact of European diseases and weaponry on indigenous American populations.

By 1700, human progress is limited by muscle power. The demand for iron and dwindling forests in Britain leads to the adoption of coal. In 1712, Thomas Newcomen invents the first practical steam engine, powered by coal, initiating the Industrial Revolution. This combination of energy and machine frees humanity from muscle power, leading to rapid technological advancements like trains, automobiles, telegraph, and electricity, and a massive population boom in the 20th century.