How fast can we go on land? On water? In the air? In space? Are there impossible speed barriers? In "All About Speed," a rally driving lesson suddenly becomes very exciting.
Learn about population in countries around the world, and how changes in the number, age, and gender of people living in a place affect life there. Explore different settlements, from ancient towns to sprawling, modern cities. Find out why and where people migrate, and discover how we can protect our planet from the risks of overpopulation.
Learn about rivers and coasts and how water shapes the landscapes in different ways. Follow rivers from their source to the sea, and explore coasts around the world. Find out how erosion creates stunning waterfalls, and see how water affects our lives, from tourism and industry to the risks of flooding.
Find out about the different types of volcanoes and how they form. Learn how scientists monitor volcanic activity, and what makes some eruptions so much more destructive than others. Read about some of the most famous volcanic eruptions in history and their effects on the people and environment surrounding them.
Discover the biomes of our planet, from lush rainforests and sweltering deserts to deep oceans and fast-flowing rivers. See how seasons and climates vary across the globe, and find out about amazing animal and plant adaptations. Learn about people who live in different places around the world and the dangers that threaten our natural environment.
Learn about the kind of resources Earth holds, and how they are extracted and used. Discover the problems and challenges posed by human consumption of these resources, from overfishing to dwindling supplies of fossil fuels. Read about the efforts being made to protect Earth's resources, including finding sustainable energy solutions and making our cities eco-friendly.
Discover what earthquakes are and how they are caused. Find out how scientists measure earthquakes, and what makes some earthquakes so much more destructive than others. Read about some of the most serious earthquake disasters in history, and how people can be better prepared in the future.