Library
Pop Challenges
Learn bite-sized concepts quickly and test your
knowledge with fun, easy tasks. Perfect for when
you're short on time but big on curiosity.
New on Acadru
10 min
50 XP
Fear This Bias: The Dunning–Kruger Effect
When confidence rises faster than competence.
10 mins
50 XP
Fear This Bias: The Dunning–Kruger Effect
When confidence rises faster than competence.
15 min
75 XP
Food Is Losing Nutrition
What’s stripping the nutrients from the fruits and grains!
15 mins
75 XP
Food Is Losing Nutrition
What’s stripping the nutrients from the fruits and grains!
15 min
75 XP
A Soda Can Is a Design Masterpiece
The everyday object perfected by billions of trials.
15 mins
75 XP
A Soda Can Is a Design Masterpiece
The everyday object perfected by billions of trials.
10 min
50 XP
The Flaw of Capitalism
Why wealth grows faster than work.
10 mins
50 XP
The Flaw of Capitalism
Why wealth grows faster than work.
15 min
75 XP
The Flat Earth Illusion
You can’t flatten a sphere, but you can prove it beautifully.
15 mins
75 XP
The Flat Earth Illusion
You can’t flatten a sphere, but you can prove it beautifully.
15 min
100 XP
Crowd Quakes Aren’t Chaos
Physics Unlocks Rhythms of Massive Human Swarms
15 mins
100 XP
Crowd Quakes Aren’t Chaos
Physics Unlocks Rhythms of Massive Human Swarms
15 min
50 XP
Diseases of the Poor Are Neglected
Why the world’s sickest get the least science
15 mins
50 XP
Diseases of the Poor Are Neglected
Why the world’s sickest get the least science
15 min
75 XP
Branded Drugs: The Gucci of Healthcare
When life-saving medicine gets a luxury price tag.
15 mins
75 XP
Branded Drugs: The Gucci of Healthcare
When life-saving medicine gets a luxury price tag.
10 min
50 XP
When Cars Forgot How to Roar
The psychology & design of bringing sound back to silence.
10 mins
50 XP
When Cars Forgot How to Roar
The psychology & design of bringing sound back to silence.
15 min
75 XP
Alive at a Concert? Thank a Crowd Engineer
How thousands move like one — design that prevents disaster
15 mins
75 XP
Alive at a Concert? Thank a Crowd Engineer
How thousands move like one — design that prevents disaster
Popular on Acadru
15 min
75 XP
Alive at a Concert? Thank a Crowd Engineer
How thousands move like one — design that prevents disaster
15 mins
75 XP
Alive at a Concert? Thank a Crowd Engineer
How thousands move like one — design that prevents disaster
10 min
50 XP
Fear This Bias: The Dunning–Kruger Effect
When confidence rises faster than competence.
10 mins
50 XP
Fear This Bias: The Dunning–Kruger Effect
When confidence rises faster than competence.
15 min
75 XP
Food Is Losing Nutrition
What’s stripping the nutrients from the fruits and grains!
15 mins
75 XP
Food Is Losing Nutrition
What’s stripping the nutrients from the fruits and grains!
15 min
75 XP
A Soda Can Is a Design Masterpiece
The everyday object perfected by billions of trials.
15 mins
75 XP
A Soda Can Is a Design Masterpiece
The everyday object perfected by billions of trials.
15 min
50 XP
Diseases of the Poor Are Neglected
Why the world’s sickest get the least science
15 mins
50 XP
Diseases of the Poor Are Neglected
Why the world’s sickest get the least science
15 min
75 XP
Branded Drugs: The Gucci of Healthcare
When life-saving medicine gets a luxury price tag.
15 mins
75 XP
Branded Drugs: The Gucci of Healthcare
When life-saving medicine gets a luxury price tag.
10 min
50 XP
The Flaw of Capitalism
Why wealth grows faster than work.
10 mins
50 XP
The Flaw of Capitalism
Why wealth grows faster than work.
15 min
75 XP
The Flat Earth Illusion
You can’t flatten a sphere, but you can prove it beautifully.
15 mins
75 XP
The Flat Earth Illusion
You can’t flatten a sphere, but you can prove it beautifully.
15 min
100 XP
Crowd Quakes Aren’t Chaos
Physics Unlocks Rhythms of Massive Human Swarms
15 mins
100 XP
Crowd Quakes Aren’t Chaos
Physics Unlocks Rhythms of Massive Human Swarms
10 min
50 XP
When Cars Forgot How to Roar
The psychology & design of bringing sound back to silence.
10 mins
50 XP
When Cars Forgot How to Roar
The psychology & design of bringing sound back to silence.
All Pop Challenges
10 min
50 XP
When Cars Forgot How to Roar
The psychology & design of bringing sound back to silence.
10 mins
50 XP
When Cars Forgot How to Roar
The psychology & design of bringing sound back to silence.
15 min
75 XP
The Flat Earth Illusion
You can’t flatten a sphere, but you can prove it beautifully.
15 mins
75 XP
The Flat Earth Illusion
You can’t flatten a sphere, but you can prove it beautifully.
15 min
75 XP
Branded Drugs: The Gucci of Healthcare
When life-saving medicine gets a luxury price tag.
15 mins
75 XP
Branded Drugs: The Gucci of Healthcare
When life-saving medicine gets a luxury price tag.
15 min
75 XP
Alive at a Concert? Thank a Crowd Engineer
How thousands move like one — design that prevents disaster
15 mins
75 XP
Alive at a Concert? Thank a Crowd Engineer
How thousands move like one — design that prevents disaster
15 min
75 XP
Food Is Losing Nutrition
What’s stripping the nutrients from the fruits and grains!
15 mins
75 XP
Food Is Losing Nutrition
What’s stripping the nutrients from the fruits and grains!
15 min
100 XP
Crowd Quakes Aren’t Chaos
Physics Unlocks Rhythms of Massive Human Swarms
15 mins
100 XP
Crowd Quakes Aren’t Chaos
Physics Unlocks Rhythms of Massive Human Swarms
15 min
75 XP
A Soda Can Is a Design Masterpiece
The everyday object perfected by billions of trials.
15 mins
75 XP
A Soda Can Is a Design Masterpiece
The everyday object perfected by billions of trials.
15 min
50 XP
Diseases of the Poor Are Neglected
Why the world’s sickest get the least science
15 mins
50 XP
Diseases of the Poor Are Neglected
Why the world’s sickest get the least science
10 min
50 XP
Fear This Bias: The Dunning–Kruger Effect
When confidence rises faster than competence.
10 mins
50 XP
Fear This Bias: The Dunning–Kruger Effect
When confidence rises faster than competence.
10 min
50 XP
The Flaw of Capitalism
Why wealth grows faster than work.
10 mins
50 XP
The Flaw of Capitalism
Why wealth grows faster than work.