The library
Everything so far
18 articles, newest first. Each one leads to three others.
World · Animals
The Whale Knows a World We Cannot Enter
What happens when an animal spends its entire life inside a medium that carries sound, pressure and movement through its body?
Mind · Perception
The World You See Is Built Inside Your Head
Something surprising happens between light reaching your eyes and the world appearing in consciousness.
World · Physics
When the Sky Can No Longer Hold the Charge
Before a lightning bolt, a cloud spends minutes quietly building a difference so large that the air itself gives way.
World · Physics
The Same Sound, Two Different Worlds
The same pressure wave obeys the same laws in air and in water, yet it builds two completely different worlds.
World · Life
The Skin Remembers Every Contact With the World
Your largest organ is also a sensing surface, reading pressure, vibration, stretch and warmth in astonishing detail. It may be the sense we trust most to tell us what is real.
Mind · Memory
Why Does Time Feel Faster as We Age?
Childhood summers seemed endless. Adult years vanish. The clock hasn't changed — but the way the brain records and remembers time has.
Origin · Emergence
What Happens Inside the Brain Before a Thought Becomes Conscious?
Much of the mind's work is finished before you know it has started. The question is what that means for the one who thinks.
Mind · Psychology
Why Can We Hear Our Own Thoughts?
The voice in your head makes no sound at all. So why does thinking so often feel like listening to someone speak — and why doesn't everyone hear it?
World · Animals
What Darkness Feels Like to an Animal That Does Not Need Sight
For the star-nosed mole, the blind cavefish and the bat, darkness is not an absence. It is simply a world built from something other than light.
Mind · Brain
Does Your Brain Experience the Present Slightly After It Happens?
Signals take time to travel and to be processed. The "now" you feel may be a careful edit of the recent past, smoothed over with a prediction of the future.
World · Nature
How Does a Tree Know Which Direction Is Upward?
A seed buried upside down will still send its root down and its shoot towards the sky. Inside its cells, tiny grains of starch are falling.
Mind · Brain
Where Does Pain Actually Exist?
It feels as if pain is in the hand you burned. But some people feel pain in limbs they no longer have — and that changes what pain turns out to be.
World · Physics
How Does Sound Create a World Underwater?
Light fades within a few hundred metres of the ocean's surface. Sound can cross entire ocean basins — and the creatures of the sea have been listening for millions of years.
Mind · Perception
Can Another Animal Experience a Colour We Cannot Imagine?
Many birds see ultraviolet. Bees see patterns on flowers invisible to us. Their worlds contain colours that human minds may never be able to picture.
World · Space
What Would Earth Feel Like Without a Permanent Sense of Up and Down?
Astronauts lose their sense of up within hours of reaching orbit. What they experience reveals how much quiet work our bodies do to keep the world upright.
Meaning · Self
Are You the Same Person You Were Ten Years Ago?
Your body has changed, your opinions have changed, your memories have been rewritten. So what, exactly, stayed the same?
Meaning · Existence
Why Vastness Feels Both Comforting and Terrifying
Standing beneath a night sky can make us feel insignificant and strangely at peace at the same time. Psychologists have begun to study why.
Meaning · Reality
Does Colour Exist Without Someone to See It?
An apple reflects some wavelengths and absorbs others. Whether it is still red when no one is looking is a harder question than it first appears.