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
15 min
75 XP
Design Can Kill — or Cure
When buildings shape survival.
15 mins
75 XP
Design Can Kill — or Cure
When buildings shape survival.
15 min
75 XP
Can Architecture Make People Bad?
The unintended effects of design
15 mins
75 XP
Can Architecture Make People Bad?
The unintended effects of design
15 min
75 XP
The Human Eye: A Brilliant Mistake?
Evolution’s masterpiece with a hidden glitch
15 mins
75 XP
The Human Eye: A Brilliant Mistake?
Evolution’s masterpiece with a hidden glitch
10 min
50 XP
Monopoly Was an Anti-Capitalist Warning
The Anti-Capitalist Game That Made Capitalism Fun
10 mins
50 XP
Monopoly Was an Anti-Capitalist Warning
The Anti-Capitalist Game That Made Capitalism Fun
15 min
75 XP
Why Wheels Can’t Turn Together
The differential allows wheels to rotate differently
15 mins
75 XP
Why Wheels Can’t Turn Together
The differential allows wheels to rotate differently
15 min
75 XP
Why Short Isn’t Fast in F1
Races are won and lost around corners
15 mins
75 XP
Why Short Isn’t Fast in F1
Races are won and lost around corners
15 min
75 XP
Toilets Need to Be Reimagined
Why sanitation no longer fits the world it built
15 mins
75 XP
Toilets Need to Be Reimagined
Why sanitation no longer fits the world it built
15 min
75 XP
Too Many Choices, Too Little Happiness
When Picking Becomes a Problem
15 mins
75 XP
Too Many Choices, Too Little Happiness
When Picking Becomes a Problem
15 min
75 XP
Philosophers Against Democracy
Why thinkers like Socrates distrusted democracy?
15 mins
75 XP
Philosophers Against Democracy
Why thinkers like Socrates distrusted democracy?
10 min
50 XP
The Skill That Schools Forgot
Listening is underestimated intelligence.
10 mins
50 XP
The Skill That Schools Forgot
Listening is underestimated intelligence.
Popular on Acadru
15 min
75 XP
Design Can Kill — or Cure
When buildings shape survival.
15 mins
75 XP
Design Can Kill — or Cure
When buildings shape survival.
10 min
50 XP
Monopoly Was an Anti-Capitalist Warning
The Anti-Capitalist Game That Made Capitalism Fun
10 mins
50 XP
Monopoly Was an Anti-Capitalist Warning
The Anti-Capitalist Game That Made Capitalism Fun
15 min
75 XP
Toilets Need to Be Reimagined
Why sanitation no longer fits the world it built
15 mins
75 XP
Toilets Need to Be Reimagined
Why sanitation no longer fits the world it built
15 min
75 XP
Too Many Choices, Too Little Happiness
When Picking Becomes a Problem
15 mins
75 XP
Too Many Choices, Too Little Happiness
When Picking Becomes a Problem
15 min
75 XP
The Human Eye: A Brilliant Mistake?
Evolution’s masterpiece with a hidden glitch
15 mins
75 XP
The Human Eye: A Brilliant Mistake?
Evolution’s masterpiece with a hidden glitch
10 min
50 XP
The Skill That Schools Forgot
Listening is underestimated intelligence.
10 mins
50 XP
The Skill That Schools Forgot
Listening is underestimated intelligence.
15 min
75 XP
Why Short Isn’t Fast in F1
Races are won and lost around corners
15 mins
75 XP
Why Short Isn’t Fast in F1
Races are won and lost around corners
15 min
75 XP
Philosophers Against Democracy
Why thinkers like Socrates distrusted democracy?
15 mins
75 XP
Philosophers Against Democracy
Why thinkers like Socrates distrusted democracy?
All Pop Challenges
15 min
75 XP
Can Architecture Make People Bad?
The unintended effects of design
15 mins
75 XP
Can Architecture Make People Bad?
The unintended effects of design
15 min
75 XP
Toilets Need to Be Reimagined
Why sanitation no longer fits the world it built
15 mins
75 XP
Toilets Need to Be Reimagined
Why sanitation no longer fits the world it built
10 min
50 XP
The Skill That Schools Forgot
Listening is underestimated intelligence.
10 mins
50 XP
The Skill That Schools Forgot
Listening is underestimated intelligence.
15 min
75 XP
The Human Eye: A Brilliant Mistake?
Evolution’s masterpiece with a hidden glitch
15 mins
75 XP
The Human Eye: A Brilliant Mistake?
Evolution’s masterpiece with a hidden glitch
15 min
75 XP
Too Many Choices, Too Little Happiness
When Picking Becomes a Problem
15 mins
75 XP
Too Many Choices, Too Little Happiness
When Picking Becomes a Problem
15 min
75 XP
Design Can Kill — or Cure
When buildings shape survival.
15 mins
75 XP
Design Can Kill — or Cure
When buildings shape survival.
10 min
50 XP
Monopoly Was an Anti-Capitalist Warning
The Anti-Capitalist Game That Made Capitalism Fun
10 mins
50 XP
Monopoly Was an Anti-Capitalist Warning
The Anti-Capitalist Game That Made Capitalism Fun
15 min
75 XP
Why Short Isn’t Fast in F1
Races are won and lost around corners
15 mins
75 XP
Why Short Isn’t Fast in F1
Races are won and lost around corners
15 min
75 XP
Philosophers Against Democracy
Why thinkers like Socrates distrusted democracy?
15 mins
75 XP
Philosophers Against Democracy
Why thinkers like Socrates distrusted democracy?
15 min
75 XP
Why Wheels Can’t Turn Together
The differential allows wheels to rotate differently
15 mins
75 XP
Why Wheels Can’t Turn Together
The differential allows wheels to rotate differently