What are UFOs? Are they real? What do they look like? Have aliens visited Earth? Explore these questions and read "The Valley of the Zombies," a thrilling story about aliens invading Earth.
Millions of years ago, a giant meteorite killed all of the dinosaurs. Find out how! Will humans all be killed the same way? Find out what we can do. Is there life on the planet Mars? Scientists think maybe the answer is yes. Find out why. Then read a scary story about what might happen, Doom From Space.
Is our planet Earth the only place in the universe where there is life? Or could there be life on other planets? If so, where will we find it? On other planets? Mars? What do you need for life? How did life start? Did life on Earth start in space? Find out how weird life on Earth can be.Then read a great story about searching for life on alien planets: The Search for Life. Sometimes things just aren't as simple as they seem!
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.
