Library
All 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.
15 mins
75 XP
What Makes You a Citizen?
Nations decide who belongs. And who doesn't.
15 mins
75 XP
Can We Dodge Recessions?
No economy avoids slow-downs for long.
10 mins
50 XP
Earthquakes Don't Kill, Bad Buildings Do
Why Did So Many Buildings Collapse in the Turkey-Syria Quake?
5 mins
50 XP
Your Gut Has a Brain
Meet the brain in your belly——and it talks back!
10 mins
50 XP
The $100 Sneaker Breakdown
Where does your $100 really go?
15 mins
100 XP
Designers Know What You’ll Click
Psychology meets computer interfaces
15 mins
75 XP
AI Doesn’t Think. So Why Is It So Smart?
AI doesn’t think—it calculates with scary precision.
15 mins
100 XP
NFTs: The Future of Art Investment?
Pixels as assets—can hype hold value?
15 mins
75 XP
Can Origami Out-Engineer Steel?
Ancient folds. Modern strength.
10 mins
50 XP
Spotting Invisible Problems
The biggest design problems? The ones no one sees.
10 mins
50 XP
How Pilots Predict Turbulence?
When the skies get rough, pilots get smarter.
15 mins
100 XP
Trading Sneakers Like Stocks?
StockX says yes! Sneaker resale
10 mins
50 XP
Slavery Powered Progress
The Industrialization Revolution's “invisible capital” was slavery profits.
10 mins
50 XP
The 7 Deadly Sins of Greenwashing!
The Greenwashing Tricks Businesses Use to Fool You!
15 mins
75 XP
Designed to Hook
Why your phone is harder to put down than you think
15 mins
75 XP
Counting Aliens (with Math)
What if the answer to “Are we alone?” is an equation?
15 mins
75 XP
Same Box, Smaller Bite?
Less product, same price—design disguises it.
15 mins
75 XP
Why Wars Are Getting Weirder?
From civil collapse to cyberattacks, the battlefield has no rules anymore.
15 mins
75 XP
Design Like Da Vinci
The Golden Ratio in Art & Creativity
10 mins
50 XP
Lipstick Sales, Recession Tales
From 9/11 to COVID, lipstick sales break the rules of recession!
15 mins
75 XP
Engineering the Sun’s Shadow
Deflect the Rays, Cool the Globe?
10 mins
50 XP
The Art of Pricing Art
Paying for paint, or the story?
5 mins
50 XP
Do Wars Have Rules?
Geneva Conventions, banned weapons, and what happens when the rules get broken.
10 mins
50 XP
What Keeps Skyscrapers Up
Gravity pulls. Wind pushes. Engineers fight back.
10 mins
50 XP
Can You Hack the Weather?
Cool the Planet-Rewriting Earth’s Weather Code
10 mins
50 XP
Why Does Poverty Exist?
Poverty traps bar the way to wealth.
15 mins
75 XP
Where Are The Aliens?
The Fermi Paradox and the Mystery of Alien Silence
15 mins
75 XP
Beauty: Hardwired in the Brain?
Evolution taught us that beauty is survival.
10 mins
50 XP
Time Travel Through Telescopes?
Looking at stars means looking into the past. Literally.
15 mins
75 XP
Grow Your Home on Mars
When every kilo costs a fortune, fungi step in.
15 mins
100 XP
Do Meaningless Tattoos Have Meaning?
The rise of absurd tattoos.
15 mins
100 XP
Outpaced by Technology
Can human wisdom keep up with god-like tech?
15 mins
100 XP
Can Economic Recoveries Spell UwU?
Recovery graphs can zigzag into letters!
15 mins
75 XP
The Human Cost of Sugar Trade
Sugar came with a brutal price tag: slavery.
10 mins
50 XP
Green Nudges – Habit-Changing Design
Not all eco-fixes are hardware—some are interface.
15 mins
100 XP
How Prime Numbers Protect Your Passwords
Easy to lock, impossible to crack—unless you break math.
5 mins
50 XP
Sleep on It
The Brain’s Most Underrated Power Move
15 mins
75 XP
Cosplay to Combat
What flies off the shelves isn’t always harmless fun.
15 mins
75 XP
The Jordan Effect
How $200 shoes sell themselves?
15 mins
75 XP
Turbulence UnTamed
Why Scientists Still Can’t Solve This
10 mins
50 XP
Art as Therapy?
Art rebuilds neural connections for the mind & body.
15 mins
75 XP
Stateless: No Country, No Rights
Living with no citizenship in any nation.
15 mins
100 XP
Japan: Soft Power, Strong Diplomacy
Influence by Charm, Not Control
5 mins
50 XP
What is Greenwashing?
Not Everything "Green" is Clean!
15 mins
100 XP
Net Zero or Net Scam?
The Billion-Dollar Carbon Scam!
10 mins
50 XP
Can Free Cash End Poverty?
Direct cash transfers to the poor can change their futures.
15 mins
100 XP
Emotional Connection Through Design
Visceral. Behavioral. Reflective.
10 mins
50 XP
Build-A-Nation
Myths, media, and wars built nations.
10 mins
50 XP
Origami for Outer Space
How paper-folding is helping rockets reach the stars!
10 mins
50 XP
Is Super Strength Possible?
The physics problem with being too strong
15 mins
100 XP
Investing in e-Sports Athletes
E-sports gets major-league level financial backing.
10 mins
50 XP
Are You a Climate Strategist?
Can You Choose the Right Strategy?
10 mins
50 XP
Updated, Yet Unchanged
Small changes, stronger sales surge.
15 mins
100 XP
How Does Handiwork Fuel Happiness?
Digging, knitting, kneading boost dopamine and resilience.
15 mins
100 XP
The Vortex Hack
How F1 Engineers Turn Turbulence into Speed
15 mins
100 XP
Tattoos: The Immune System's Challenge
Macrophages lock tattoos in for life.
10 mins
50 XP
The City That’s Slowly Disappearing
A mega-city is sinking—but not for the reason you think.
10 mins
50 XP
Red = React
This color doesn’t wait for logic.
15 mins
100 XP
Do Subsidies Reward the Richest?
Big (tax) breaks for the big (rich) fish.
10 mins
50 XP
How Captain America Got Super?
Can We Build a Real Super Soldier?
15 mins
100 XP
How to Cool a City?
Singapore’s mission to outsmart urban heat!
10 mins
50 XP
The Guilt-Free Foam for Packaging
Holds like plastic. Breaks down like a leaf.
10 mins
50 XP
Bikes That Heals Like Skin?
From bicycles to buildings—materials that mend themselves.
15 mins
75 XP
E-Athletes Train Like Olympians
Gaming has rules, coaches, drills—and burnout.
15 mins
75 XP
Why Can’t AI Draw Left-Handed People? Yet!
It’s not dumb—it’s under-taught.
10 mins
50 XP
Can Skirts Predict Stocks?
Fashion trends + financial trends = a strange math.
10 mins
50 XP
Tattoos: Culture or Counter-Culture?
Once sacred, branded sinful, now dubbed stylish.
15 mins
75 XP
Welfare Help or Hidden Trap?
Intended to aid; structured to confine.
10 mins
50 XP
The Underground Brain That Keeps Forests Alive
It sees without eyes. It grows without rest. And it remembers.
15 mins
75 XP
Art As A Tax Shield
Elegant décor or financial escape hatch?
10 mins
50 XP
E-Sports' Achilles Wrist
Carpal Tunnel Syndrome is ending esports careers.
15 mins
75 XP
Why Isn't Earth Toasted?
Saved from Solar Flares by Magnetism
15 mins
100 XP
Solar Storm Hit: Satellites Fall
How Solar Storms Destroy Satellites
10 mins
50 XP
Not Buying Boxers? Economists Worry!
Bad underwear sales mean big financial trouble.
10 mins
50 XP
Can You Be Conditioned Like Pavlov’s Dogs?
How past experiences shape habits, fears, and emotions!
15 mins
100 XP
Ordinary People, Extraordinary Evil?
Can good people do terrible things?
10 mins
50 XP
Gold: Born in Violence
That gold ring? Forged in a star smash.
10 mins
100 XP
Who Knew Avoiding War Could Start One?
Inside the decisions that lead to war.
15 mins
100 XP
Fold It Right—Or Nothing Works
Master the 4 rules. Miss one—and you might crash a satellite.
10 mins
50 XP
Fibonacci - Nature's Algorithm
Nature isn’t guessing—it’s computing.
15 mins
100 XP
Geoengineering Governance
The Ethics & Politics of Geoengineering
15 mins
100 XP
Forced Labor Or Slavery?
To remedy Nazi job crises, POWs were enslaved.
10 mins
75 XP
Why Do We Obey Wicked Leaders?
What makes ordinary people follow cruel orders?
10 mins
50 XP
Would You Ever Become a Bully?
Could group think turn you into a bully?
10 mins
50 XP
The Chemistry of Hero Tech
Avengers: Superpowers meet supermaterials
10 mins
50 XP
Scrolling in the Skinner Box
You’re not just scrolling—you’re pressing a digital lever.
15 mins
100 XP
Crack the Code – The Math That Could Break RSA
Can modular math break the world’s strongest locks?
10 mins
50 XP
Plot Twist: Disney vs. Ghibli
Two studios shape the world of animation differently.
15 mins
75 XP
Who Wants a Piece of Greenland?
Why Economies Love Natural Resources?
15 mins
75 XP
Schools That Float?
When Floods Rise, These Schools Adapt!
10 mins
50 XP
Aurora Incoming!
Explained by Space Weather
15 mins
100 XP
New Twist or Old Taste?
Copying Coke Classic let Zero innovate.
10 mins
50 XP
Prime Numbers in Nature
Nature’s secret code: Can bugs do math?