Chapter 1
Kitchen chemistry hacks
Chapter 2
Mind and memory hacks
Chapter 3
Ancient survival hacks
Chapter 4
Everyday physics and repair hacks
Ch 3 · Ancient survival hacks
BETA
mamabear1989 Combine raw materials to figure out how early humans solved daily survival challenges.
mamabear1989 Persian badgirs used wind and underground water to create natural air conditioning.
Quiz
What ancient Chinese compass hack used a magnetized needle floating in water?
mamabear1989 Aztecs built highly productive floating gardens on shallow lakes to feed their empire.
Fun Fact
Ancient soap: Ancient Babylonians hacked hygiene in 2800 BCE by boiling fats with wood ash, creating the world's first chemical soap.
Quiz
What natural material did ancient Greeks use to clean themselves before soap?
Quiz
How did Polynesian wayfinders navigate the open Pacific Ocean without compasses?
Glossary
yakhchal (noun)
An ancient evaporative cooler used to store ice and food in arid regions. Persian engineers constructed these domed structures as early as 400 BCE to preserve food during scorching summers.
An ancient evaporative cooler used to store ice and food in arid regions. Persian engineers constructed these domed structures as early as 400 BCE to preserve food during scorching summers.