EXPLORE THE WORLD

3:52

Fossils 101

Fossils are echoes of an ancient past. Find out about the two major categories of fossils, how fossilisation occurs, and how fossils can help paint a picture of the planet's history.

Lions 101

How much do lions eat? When do they begin to roar? Find out how many pounds of meat they devour, how loud their roars can be, and whether they are endangered.

Invasive Species 101

Invasive species cost the global economy over a trillion dollars each year. Find out how these non-native organisms are introduced into an ecosystem, how they impact local communities, and which measures can be taken to help prevent the introduction of invasive species.

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Science

Ebola 101

Ebola is a rare, but extremely dangerous disease. Find out how many strains of ebola exist, how the ebola virus attacks its host, and the symptoms caused by the virus. The Hot Zone is coming soon to National Geographic.

Dark Universe 101

Of all the great unknowns in outer space, the dark universe might just be the most mysterious. Learn the basics of dark energy and dark matter and how scientists study this nearly undetectable realm of the cosmos.
Environment

Light Pollution 101

Ever since the light bulb's invention 150 years ago, artificial light has illuminated homes, streets, and skies -- but with some unintended consequences. Learn about the major types of light pollution, their impact on human health, and how the worldwide glow from artificial light may continue to grow.
Animals

Wolves 101

With their piercing looks and spine-tingling howls, wolves inspire both adoration and controversy around the world. Find out how many wolf species exist, the characteristics that make each wolf's howl unique, and how the wolf population in the continental United States nearly became extinct.

HUMANS, EXPLAINED

2:57

Genetics 101

What is a genome, and how are traits passed from generation to generation? Learn how pea plants helped launch the study of genetics and how the field of genetics research has evolved over time.
2:26

Heart 101

The human heart beats up to 3 billion times over an average lifespan. Learn about the anatomy of the heart and how this muscular organ provides life-giving oxygen throughout the body.
History
3:03

Cave Art 101

From human hands to now-extinct animals, cave art gives us a glimpse into prehistoric life. Who created cave art, and what was its initial purpose? Explore the paintings of Chauvet-Pont d'Arc and Lascaux Grotto, and learn what prehistoric art can tell us about our world thousands of years ago.

SPACE

3:55

Solar System 101

How many planets are in the solar system? How did it form in the Milky Way galaxy? Learn facts about the solar system's genesis, plus its planets, moons, and asteroids.
3:16

Mercury 101

The planet Mercury is named after the messenger of the Roman gods because of its fleeting nature across the sky. Find out the reason behind its incredible speed, if it is indeed the hottest planet in the Solar System, and why this smallest of our neighbouring planets is slowly shrinking.
4:45

Sun 101

" The sun keeps the planets in its orbit. What would happen if it disappeared entirely? Learn about the star at the center of our solar system, and how it is critical to all life as we know it."
3:01

Jupiter 101: everything you wanted to know about the giant planet

Jupiter is the oldest and most massive world in the solar system. Learn about the ancient planet's origin story, its Great Red Spot and oceanic moons, and how this ancient world influenced the formation of the solar system's other planets.
3:13

Venus 101

Named after the ancient Roman goddess of beauty, Venus is known for its exceptional brightness. Find out about the volcanoes that dot Venus's surface, the storms that rage in its atmosphere, and the surprising feature that makes Venus outshine every planet or star in the night sky.

Sea Turtles 101

Sea turtles have existed since the time of the dinosaurs. Find out about the ancient mariners' oldest known ancestor, how certain adaptations may have helped the reptiles survive, and the conservation efforts being made to save them.

Tigers 101

Tigers are icons of beauty, power, and the importance of conservation. Learn five surprising facts about these striped felines, including how large the cats can be, an adaptation some developed for swimming, and how much wild tiger populations have declined. February 2019 is National Geographic's Big Cat Month: found out more about it here: www.savearchie.com  
Environment
3:50

Climate 101: Glaciers

Glaciers appear on almost every continent. However, they are rapidly melting due to the warming climate. Find out how glaciers form and other interesting facts about glaciers.

Pregnancy 101: everything you wanted to know, from conception to delivery

While customs and traditions involving pregnancy vary worldwide, the developmental process is essentially universal. Find out about the science of pregnancy from conception, through the three trimesters, and to labour and delivery.

Alcohol 101

The earliest known alcoholic beverage dates back to about 9,000 years ago. Find out which civilisations produced the first beers, wines, and spirits; the chemistry behind alcohol's mind-altering effects; and the surprising ways alcohol has influenced culture.

Extremophiles 101: the most resilient creatures on the planet

Extremophiles are organisms that can live in exceptionally harsh environments. Find out about the different types of extremophiles, their adaptations, where they live, and which one is considered to be the most resilient creature on the planet.

AIDS 101

About 37 million people around the world are currently living with AIDS. Learn how the human immunodeficiency virus (HIV) causes AIDS, where HIV may have originated, and how AIDS has become one of the worst pandemics in modern history.

Earth 101

Earth is the only planet known to maintain life. Find out the origins of our home planet and some of the key ingredients that help make this blue speck in space a unique global ecosystem.
Science
3:13

Helium 101

What is helium used for, and where does it come from? Learn facts about this noble gas, including how it causes balloons to float, its surprising uses in medicine and exploration, and how its limited availability on Earth could affect science and industry.

Supervolcanoes 101

They are amongst the most destructive forces on the planet – and while evidence exists of colossal, climate-altering eruptions in ancient history, the most recent super volcano eruption was in 1812 in Indonesia, and became known as 'The Year Without a Summer.'  Despite this, millions live within the sway of active supervolcanoes around the world today. Here's what we know about them.