Our living planet
How Earth's landscapes, climates and ecosystems fit together, from mountains to coral reefs. 7 guides, about 55 minutes of reading.
- Plate tectonics: why continents move
The evidence for drifting plates, the three boundary types, and what each one builds or destroys.
- Volcanoes and earthquakes
Why the ground shakes and mountains erupt, how scientists measure them, and how people reduce the danger.
- The water cycle
How water moves between oceans, air, ice, rivers and underground, and why the cycle is changing as the planet warms.
- Climate zones and biomes
Why the world is divided into tundra, taiga, grassland, desert and rainforest, and what decides which one you live in.
- Tropical rainforests
Why the forests around the equator hold more species than anywhere else on land, and what happens when they are cleared.
- The ocean and its zones
From sunlit surface waters to the pitch-black trenches, how life changes with depth in Earth's largest habitat.
- Coral reefs
How tiny animals build structures visible from space, and why reefs are so rich and so fragile.