Everyday knowledge, clearly explained

Mokujipedia is a growing collection of short articles on science, nature, history, our planet and healthy living. Think of it as a table of contents for curious minds.

Earth seen from space

Latest articles

The Solar System at a Glance
Space

The Solar System at a Glance

Eight planets, one star and billions of smaller bodies: a short tour of our cosmic neighbourhood.

Why Does Saturn Have Rings?
Space

Why Does Saturn Have Rings?

Saturn's rings are made of countless pieces of ice. Here is what they are and how we learned about them.

Why Is the Sky Blue?
Earth

Why Is the Sky Blue?

A simple effect of sunlight and air explains the colour of the daytime sky and the red of sunsets.

Earth at Night: What Satellite Lights Tell Us
Earth

Earth at Night: What Satellite Lights Tell Us

Composite satellite images of the night side of our planet reveal where people live.

The Colosseum: Rome's Great Arena
History

The Colosseum: Rome's Great Arena

The largest amphitheatre of the ancient world is still one of the most visited monuments on Earth.

How the Printing Press Changed the World
History

How the Printing Press Changed the World

Movable type made books cheaper and ideas easier to spread.

How Microscopes Opened a New World
Science

How Microscopes Opened a New World

From simple lenses to electron beams: the tools that revealed life too small to see.

Coral Reefs: Rainforests of the Sea
Nature

Coral Reefs: Rainforests of the Sea

Small animals build huge structures that shelter a large share of ocean life.

How Forests Work
Nature

How Forests Work

Trees, soil, water and sunlight form a living system that supports much of the life on land.

The Water Cycle Explained
Earth

The Water Cycle Explained

Water never leaves Earth, it just keeps moving between sea, air and land.

Why Sleep Matters
Health

Why Sleep Matters

Sleep is not wasted time. A short guide to what happens while we rest.

Fruit and Vegetables: The Basics
Health

Fruit and Vegetables: The Basics

Why health organisations recommend filling more of your plate with plants.