From over 100,000 films, discover the handful you'll love.
Free or premium access to the world's largest documentary library.
7227 films(Page 7 of 151)
The observable universe extends 45 billion light years, revealing a remarkably uniform structure of galaxies and voids across vast distances.
Sergey Zimov aims to restore an ecosystem that disappeared 10,000 years ago by reintroducing ancient megafauna to combat climate change in Siberia.
Efavirenz, an antiretroviral drug for HIV, has been linked to bizarre hallucinations and criminal behavior, prompting investigations into its effects in South Africa.
In the Great Plains of Mongolia, Pallas's cats adapt to extreme temperatures while female cats teach their young essential hunting and survival skills.
A two-and-a-half-year-old mummified boy, discovered in a Libyan rock shelter, predates Egyptian mummies and reveals a previously unknown African culture.
Ketamine, often associated with recreational use, shows promise as a rapid treatment for chronic depression, despite concerns over its unregulated medical application.
Cuneiform, the world's earliest writing system from ancient Mesopotamia, transformed communication and record-keeping over five thousand years ago.
In Indonesia, French scientists investigate the Rinjani-Samalas supervolcano, believed to be the source of the largest volcanic eruption in human history, which disrupted global climate and societies.
The End-Ordovician Extinction, marking the first of the 'Big Five' mass extinctions, led to the loss of over 80% of marine species on Earth.
In the Late Miocene Epoch, tectonic activity isolated the Mediterranean Sea, transforming it into a vast, salty desert and drastically altering marine life.
Over 300 feet of sea level rise transformed the Black Sea from a freshwater lake into a vast inland sea, possibly inspiring ancient flood legends.
One second after the Big Bang, the universe had already accumulated 436 quadrillion seconds of history, shaping its current state and future.
Over 400 tornadoes threaten Tornado Alley each year, prompting scientists to study their destructive potential and improve preparedness for future disasters.
Five male cheetahs form the largest coalition ever recorded in the Northern Serengeti, challenging established beliefs about their social behavior.
Identical twins and triplets, separated at birth for a controversial study, confront the lasting trauma of their forced separation and the deception that followed.
The U.S. response to COVID-19 is scrutinized, highlighting the intersection of politics and science that contributed to the nation's severe outbreak.
Stonehenge, an iconic Neolithic monument in Wiltshire, is examined by Dan Snow, highlighting recent discoveries and ongoing mysteries surrounding its origins.
In 2023, the research vessel Falkor 2 traveled over 39,000 kilometers, mapping 190,000 square kilometers of seafloor and discovering five new hydrothermal vent fields.
Ancient footprints in New Mexico's White Sands National Park provide evidence that Ice Age humans coexisted with giant ground sloths and mammoths much earlier than previously believed.
In Costa Rica, Brazil, and Australia, scientists study complex forest ecosystems to understand their potential in mitigating climate change and species extinction.
At two meters in size, the green iguana is the largest lizard in Central and South America, competing for survival against the carnivorous basilisk.
A praying mantis can strike its prey in a fraction of a second, using its front legs as deadly weapons to capture and consume it alive.
The Cambrian explosion, a unique event in Earth's history, marked the sudden appearance of animals, leaving scientists with no points of reference for comparison.
Each night, touch-me-not balsam leaves go limp as the plant exudes excess moisture, a crucial adaptation in the waterlogged soils of the Lake District.
66 million years ago, dinosaurs roamed the Americas, and recent fossil discoveries are reshaping our understanding of their behavior and intelligence.
The Black Death, one of history's deadliest pandemics, prompts an exploration of its true causes, from rats to global trade and ancient warfare.
In the Late Carboniferous Period, the emergence of amniotes marked a significant evolutionary step as they adapted to life on land amidst giant insects.
2000 miles is the distance barnacle geese travel each winter to reach a Scottish river, guided by quantum mechanics in their navigation.
One in six women and one in ten men develop dementia after age 65, prompting researchers to seek ways to combat age-related diseases.
AI consciousness researcher Cameron Berg explores the implications of potentially creating a new kind of mind, raising profound questions about humanity's technological advancements.
Twelve astronauts from the United States walked on the moon during NASA's Apollo missions from 1969 to 1972, marking a significant achievement in space exploration.
German Memory Champion 2025 Johannes Mallow has won at least 45 trophies in his 55 championships, demonstrating techniques for effective information retention.
The search for a unified Theory of Everything spans decades, exploring concepts like string theory, hidden dimensions, and the holographic principle.
Nine skeletons found at Stirling Castle, believed to be victims of the Scottish Wars of Independence, reveal evidence of brutal injuries and violent deaths.
Plastic pollution efforts may have exacerbated the crisis, highlighting the complexities of recycling and the stakes involved in the ongoing battle over plastics.
A million soldiers and civilians died in the Crimean War, which changed the map of Europe and marked a significant shift in military reporting.
Thousands of volunteers contribute gravity readings to investigate how this force affects weight, height, and aging in everyday life.
Three days of excavation at Upton Castle reveal the foundations of a Norman chapel, challenging assumptions about the site's medieval origins.
Astronauts launched the Hubble Space Telescope into orbit in April 1990, enabling it to capture clear images of the universe without atmospheric distortion.
Over 12,200 meters long, the Great Barrier Reef is home to more than 9,000 species, including the highly intelligent day octopus.
A giant squid measuring 24 feet long, with tentacles each six feet, is displayed at the Vasco da Gama Aquarium in Lisbon, Portugal.
A billion neutrinos outnumber ordinary matter particles across the universe, offering potential insights into the cosmos and dark matter.
Viewers discover Lord Howe Island's unique biodiversity and ongoing nature discoveries.
Minoan Civilization, flourishing on Crete from c. 3500 BC, remains enigmatic due to undeciphered scripts and limited understanding of its complex culture.
Quantum mechanics, nested simulations, and the nature of reality are explored through insights from physicist Paul Sutter and various scientific organizations.
Fast radio bursts, detected 500 million light years away, provide insight into the universe's mysteries and the conditions on Earth during its early history.
The transformation of Nazi Germany's ballistic missile technology into a symbol of American progress highlights the complex interplay of science, power, and morality.
Around 300 years ago, humans developed machines capable of processing extraordinary amounts of energy to perform previously unimaginable tasks.
