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.
What is science fiction? Who invented it? What kinds of science fiction stories are there? Are aliens science fiction, or are they real? Then find out about some amazing science fiction inventions, such as robots and matter transmitters. Is time travel possible, or is that just science fiction?Then read The City: a science fiction story set in the future. It's a world of half-people, half robots, where the Control Zone is in charge of everything.
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!
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.
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.
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.
Explore mountains around the world, and find out how they are created. Discover what happens when mountains experience erosion and how climate and biomes change with elevation. Find out about the people, plants, and animals that live at high altitudes and the risk of deadly avalanches.