What are coral reefs? Coral can be found in tropical ocean waters around the world. But how much do you know about reefs and the tiny animals—polyps—that build them? Learn all about... Read more »
Far above Earth’s surface, the ozone layer helps to protect life from harmful ultraviolet radiation. Learn what CFCs are, how they have contributed to the ozone hole, and how the 1989 Montreal... Read more »
Electromagnetism is one of the four fundamental forces of nature. Learn about the relationship between electricity and magnetism, the different wavelengths on the electromagnetic spectrum, and how an invisible force protects our... Read more »
A total solar eclipse happens somewhere on Earth once every year or two. What is an eclipse? Learn more about how solar eclipses happen, the four types of eclipses, and how to... Read more »
What is air pollution? Learn how greenhouse gasses, smog, and toxic pollutants effect climate change, and human health. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world’s premium destination for... Read more »
Forests cover about 30% of the planet, but deforestation is clearing these essential habitats on a massive scale. What is deforestation? Find out the causes, effects, and solutions to deforestation. ➡ Subscribe: http://bit.ly/NatGeoSubscribe... Read more »
What are supervolcanoes, and how catastrophic can they be? Learn how supervolcanoes form, where supervolcanoes are located, and how their destructive capabilities can make way for new life. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About... Read more »
At any moment, about 2,000 thunderstorms are occurring worldwide. Learn how thunderstorms form, what causes lightning and thunder, and how these violent phenomena help balance the planet’s energy and electricity. ➡ Subscribe:... Read more »
About 30 meteor showers can be seen from Earth throughout the year. Learn the science behind meteor showers, the dates when showers like the Geminids occur, and the origins of wishing upon... Read more »
About 1,500 active volcanoes can be found around the world. Learn about the major types of volcanoes, the geological process behind eruptions, and where the most destructive volcanic eruption ever witnessed occurred.... Read more »