Some scientists say there could be 200 million different types of living things in the world. Actually, nobody really knows. But there is a problem. Many of these different types of things are becoming extinct. Find out why. Find out which animals are in danger and what we can do to save them. Then read Where The Forest Ended. It's a story that shows that sometimes answers aren't easy.
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.
Looks at ten animals at risk of becoming extinct, and explains how to help protect the animals and their habitats.
This story describes what has happened to the elephant's ancestors, Mastodons and the mammoths, and what could happen to the elephant if it is unable to adapt to life changes.
What is a disaster? Is being ill a disaster? What about 75 million dying in the Black Death? Find out what makes disasters happen before reading The Eruption to learn who to trust when a volcano erupts.