Welcome to Acadru

Pick Your Path.
Start Anywhere.

Challenges, quests, missions—your
learning journey, your choice.

Take the Discovery Quiz

Filter By

Pop Challenges

View all

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

Being Able to Flush Is a Privilege

What sanitation reveals about inequality

15 mins

75 XP

Being Able to Flush Is a Privilege

What sanitation reveals about inequality

15 min

100 XP

The Shopkeeper’s Sign

When Politics Becomes Performance

15 mins

100 XP

The Shopkeeper’s Sign

When Politics Becomes Performance

Does Riding Behind Someone Make Cyclists Faster?

10 min

50 XP

Does Riding Behind Someone Make Cyclists Faster?

At the elite level, physics decides.

10 mins

50 XP

Does Riding Behind Someone Make Cyclists Faster?

At the elite level, physics decides.

15 min

100 XP

Not All Aloneness Is Equal

Isolation, loneliness, and solitude affect us in different ways.

15 mins

100 XP

Not All Aloneness Is Equal

Isolation, loneliness, and solitude affect us in different ways.

15 min

75 XP

Birds That Use Quantum Physics

When evolution figured out quantum physics

15 mins

75 XP

Birds That Use Quantum Physics

When evolution figured out quantum physics

10 min

50 XP

A World Where a Cut Can Kill

When everyday injuries become life-threatening again

10 mins

50 XP

A World Where a Cut Can Kill

When everyday injuries become life-threatening again

10 min

50 XP

Night Wasn’t Meant to Be This Bright

How artificial light quietly rewired life after dark

10 mins

50 XP

Night Wasn’t Meant to Be This Bright

How artificial light quietly rewired life after dark

15 min

75 XP

Why Pigeons Love Cities

The world’s most hated bird might be misunderstood

15 mins

75 XP

Why Pigeons Love Cities

The world’s most hated bird might be misunderstood

The Story You Tell Shapes Who You Become

15 min

75 XP

The Story You Tell Shapes Who You Become

So choose it carefully, because repetition turns stories into identity.

15 mins

75 XP

The Story You Tell Shapes Who You Become

So choose it carefully, because repetition turns stories into identity.

Is the World on the Brink of a TB Crisis?

15 min

75 XP

Is the World on the Brink of a TB Crisis?

A forgotten disease is quietly fighting back

15 mins

75 XP

Is the World on the Brink of a TB Crisis?

A forgotten disease is quietly fighting back

15 min

75 XP

Inside the Bridgerton Apothecary

Where plots are brewed in poison.

15 mins

75 XP

Inside the Bridgerton Apothecary

Where plots are brewed in poison.

15 min

75 XP

Early Bird or Night Owl?

Not everyone wakes up the same

15 mins

75 XP

Early Bird or Night Owl?

Not everyone wakes up the same

15 min

75 XP

How Farmers Lost Control of Seeds

When growing food requires permission.

15 mins

75 XP

How Farmers Lost Control of Seeds

When growing food requires permission.

10 min

50 XP

The Hidden Lab in the Sky

How airplanes create oxygen in emergencies.

10 mins

50 XP

The Hidden Lab in the Sky

How airplanes create oxygen in emergencies.

15 min

75 XP

The Focus State Your Brain Loves

How deep engagement reduces stress and waiting.

15 mins

75 XP

The Focus State Your Brain Loves

How deep engagement reduces stress and waiting.

10 min

50 XP

How Two Sticks Carry a Culture

What your everyday tools are quietly teaching you.

10 mins

50 XP

How Two Sticks Carry a Culture

What your everyday tools are quietly teaching you.

10 min

50 XP

Why Subtitles Feel Necessary Now

It’s not your hearing. It’s how shows are made.

10 mins

50 XP

Why Subtitles Feel Necessary Now

It’s not your hearing. It’s how shows are made.

15 min

75 XP

The Case of the Missing Chips

Sneaky economics behind the same price, smaller pack.

15 mins

75 XP

The Case of the Missing Chips

Sneaky economics behind the same price, smaller pack.

15 min

75 XP

Fractals Changed Hollywood

The infinite pattern changed how movies move

15 mins

75 XP

Fractals Changed Hollywood

The infinite pattern changed how movies move

Mini Quests

View all

Rescue the Elements

Hack the Table: One Table. Infinite Possibilities

View Quest

30 mins

500 XP

Invent Your Own Currency

Could your idea be the next Bitcoin?

View Quest

60 mins

750 XP

Fix Concrete’s Dirty Secret

Concrete is cracking the climate—can nature fix it?

View Quest

60 mins

700 XP

Stop the Next Collapse

When buildings fall, lives and dreams shatter.

View Quest

30 mins

500 XP

Fix the Resource Curse

Rich in Resources. Poor in Policy?

View Quest

30 mins

500 XP

Eco-Fakes Uncovered

Learn to spot deceptive marketing and demand real sustainability!

View Quest

30 mins

500 XP

Invent the Next Economic Index

Decode the economy’s weirdest signals

View Quest

30 mins

500 XP

Resist the Crowd Trap

When everyone stays silent, evil wins.

View Quest

30 mins

500 XP

Turbulence, Illustrated

What equations can’t solve… your art might reveal.

View Quest

30 mins

500 XP

Can You Prove Genocide?

Genocide is a legal word, not just a tragedy.

View Quest

30 mins

500 XP

Fix Turbulence with Nature

Can animal secrets help us beat chaotic wind?

View Quest

30 mins

500 XP

Fighting the Rising Seas

Spot the risks, and help rebuild our coastal cities!

View Quest

30 mins

500 XP

Hunt the Hidden Primes

Think primes are predictable? Hunt. Be Surprised.

View Quest

30 mins

500 XP

Outsmart the Time Thieves

Rescue your mind from infinite distraction.

View Quest

30 mins

500 XP

Space Weather Watchers

Can You Decode the Sun’s Secrets Before They Disrupt Earth?

View Quest

30 mins

500 XP

Pop Challenges

View all

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

Being Able to Flush Is a Privilege

What sanitation reveals about inequality

15 mins

75 XP

Being Able to Flush Is a Privilege

What sanitation reveals about inequality

15 min

100 XP

The Shopkeeper’s Sign

When Politics Becomes Performance

15 mins

100 XP

The Shopkeeper’s Sign

When Politics Becomes Performance

10 min

50 XP

Does Riding Behind Someone Make Cyclists Faster?

At the elite level, physics decides.

10 mins

50 XP

Does Riding Behind Someone Make Cyclists Faster?

At the elite level, physics decides.

15 min

100 XP

Not All Aloneness Is Equal

Isolation, loneliness, and solitude affect us in different ways.

15 mins

100 XP

Not All Aloneness Is Equal

Isolation, loneliness, and solitude affect us in different ways.

15 min

75 XP

Birds That Use Quantum Physics

When evolution figured out quantum physics

15 mins

75 XP

Birds That Use Quantum Physics

When evolution figured out quantum physics

10 min

50 XP

A World Where a Cut Can Kill

When everyday injuries become life-threatening again

10 mins

50 XP

A World Where a Cut Can Kill

When everyday injuries become life-threatening again

10 min

50 XP

Night Wasn’t Meant to Be This Bright

How artificial light quietly rewired life after dark

10 mins

50 XP

Night Wasn’t Meant to Be This Bright

How artificial light quietly rewired life after dark

15 min

75 XP

Why Pigeons Love Cities

The world’s most hated bird might be misunderstood

15 mins

75 XP

Why Pigeons Love Cities

The world’s most hated bird might be misunderstood

15 min

75 XP

The Story You Tell Shapes Who You Become

So choose it carefully, because repetition turns stories into identity.

15 mins

75 XP

The Story You Tell Shapes Who You Become

So choose it carefully, because repetition turns stories into identity.

15 min

75 XP

Is the World on the Brink of a TB Crisis?

A forgotten disease is quietly fighting back

15 mins

75 XP

Is the World on the Brink of a TB Crisis?

A forgotten disease is quietly fighting back

15 min

75 XP

Inside the Bridgerton Apothecary

Where plots are brewed in poison.

15 mins

75 XP

Inside the Bridgerton Apothecary

Where plots are brewed in poison.

15 min

75 XP

Early Bird or Night Owl?

Not everyone wakes up the same

15 mins

75 XP

Early Bird or Night Owl?

Not everyone wakes up the same

15 min

75 XP

How Farmers Lost Control of Seeds

When growing food requires permission.

15 mins

75 XP

How Farmers Lost Control of Seeds

When growing food requires permission.

10 min

50 XP

The Hidden Lab in the Sky

How airplanes create oxygen in emergencies.

10 mins

50 XP

The Hidden Lab in the Sky

How airplanes create oxygen in emergencies.

15 min

75 XP

The Focus State Your Brain Loves

How deep engagement reduces stress and waiting.

15 mins

75 XP

The Focus State Your Brain Loves

How deep engagement reduces stress and waiting.

10 min

50 XP

How Two Sticks Carry a Culture

What your everyday tools are quietly teaching you.

10 mins

50 XP

How Two Sticks Carry a Culture

What your everyday tools are quietly teaching you.

10 min

50 XP

Why Subtitles Feel Necessary Now

It’s not your hearing. It’s how shows are made.

10 mins

50 XP

Why Subtitles Feel Necessary Now

It’s not your hearing. It’s how shows are made.

15 min

75 XP

The Case of the Missing Chips

Sneaky economics behind the same price, smaller pack.

15 mins

75 XP

The Case of the Missing Chips

Sneaky economics behind the same price, smaller pack.

15 min

75 XP

Fractals Changed Hollywood

The infinite pattern changed how movies move

15 mins

75 XP

Fractals Changed Hollywood

The infinite pattern changed how movies move

Mini Quests

View all

Rescue the Elements

Hack the Table: One Table. Infinite Possibilities

View Quest

30 mins

500 XP

Invent Your Own Currency

Could your idea be the next Bitcoin?

View Quest

60 mins

750 XP

Fix Concrete’s Dirty Secret

Concrete is cracking the climate—can nature fix it?

View Quest

60 mins

700 XP

Stop the Next Collapse

When buildings fall, lives and dreams shatter.

View Quest

30 mins

500 XP

Fix the Resource Curse

Rich in Resources. Poor in Policy?

View Quest

30 mins

500 XP

Eco-Fakes Uncovered

Learn to spot deceptive marketing and demand real sustainability!

View Quest

30 mins

500 XP

Invent the Next Economic Index

Decode the economy’s weirdest signals

View Quest

30 mins

500 XP

Resist the Crowd Trap

When everyone stays silent, evil wins.

View Quest

30 mins

500 XP

Turbulence, Illustrated

What equations can’t solve… your art might reveal.

View Quest

30 mins

500 XP

Can You Prove Genocide?

Genocide is a legal word, not just a tragedy.

View Quest

30 mins

500 XP

Fix Turbulence with Nature

Can animal secrets help us beat chaotic wind?

View Quest

30 mins

500 XP

Fighting the Rising Seas

Spot the risks, and help rebuild our coastal cities!

View Quest

30 mins

500 XP

Hunt the Hidden Primes

Think primes are predictable? Hunt. Be Surprised.

View Quest

30 mins

500 XP

Outsmart the Time Thieves

Rescue your mind from infinite distraction.

View Quest

30 mins

500 XP

Space Weather Watchers

Can You Decode the Sun’s Secrets Before They Disrupt Earth?

View Quest

30 mins

500 XP

Pick Your Path. Start Anywhere.

Rescue the Elements

Invent Your Own Currency

Fix Concrete’s Dirty Secret

Stop the Next Collapse

Fix the Resource Curse

Eco-Fakes Uncovered

Invent the Next Economic Index

Resist the Crowd Trap

Turbulence, Illustrated

Can You Prove Genocide?

Fix Turbulence with Nature

Fighting the Rising Seas

Hunt the Hidden Primes

Outsmart the Time Thieves

Space Weather Watchers

Rescue the Elements

Invent Your Own Currency

Fix Concrete’s Dirty Secret

Stop the Next Collapse

Fix the Resource Curse

Eco-Fakes Uncovered

Invent the Next Economic Index

Resist the Crowd Trap

Turbulence, Illustrated

Can You Prove Genocide?

Fix Turbulence with Nature

Fighting the Rising Seas

Hunt the Hidden Primes

Outsmart the Time Thieves

Space Weather Watchers

Pick Your Path.
Start Anywhere.