Science for curious minds
How the world works, explained one clear idea at a time
Science and how things work, explained clearly: space, planet Earth, everyday technology, the human body, physics, chemistry and the big ideas.
XDAILY explains science and the way things work for curious adults: why the sky is blue, how GPS knows where you are, what happens inside a star, how the heart pumps, why ice floats and how scientists know what they know, in plain words and without hype.
Ecclesiastes 1:5–7
Three circuits, one curious book
The sun's circuit
The sun rises and hurries back to where it rises. We now know it is the Earth that turns, once a day on its axis and once a year around the Sun, and that its tilt of about 23.4 degrees gives us the seasons.
The wind's circuit
Round and round goes the wind. Warm air rises near the equator, cools and sinks further north and south, and the turning Earth bends these flows into the great belts of trade winds and westerlies that steer our weather.
The water's circuit
All streams run to the sea, yet the sea is never full. Sunlight lifts water from the oceans as vapour, winds carry the clouds inland, rain and snow fall on the hills, and rivers bring the water back: the water cycle.
Our first explainers are being researched, written and fact-checked. Please come back soon.
Six fields of view
Where shall we look today?
- Field I Space The Sun, the Moon, planets, stars, galaxies and the tools we use to study them, from seasons and eclipses to black holes and the edge of the observable universe. 0 explainers
- Field II Planet Earth Weather and climate, oceans and tides, volcanoes and earthquakes, rivers, rocks and the cycles that keep our planet working. 0 explainers
- Field III How Things Work The science inside everyday technology: GPS, microwaves, batteries, the internet, touchscreens, refrigerators, aircraft and more. 0 explainers
- Field IV The Human Body How the body works, from heartbeat and breathing to sleep, senses, immunity and digestion. Explanations only, never medical advice. 0 explainers
- Field V Physics & Chemistry Light, sound, heat, electricity, atoms and reactions: the rules of matter and energy explained with everyday examples. 0 explainers
- Field VI Big Ideas Evolution, relativity, quantum theory, the scientific method and the discoveries that changed how we see the world, and how we know they are true. 0 explainers
The star chart