Why Do Three Electric Currents Make a Motor Spin ?

How Did a Tiny Label Become More Powerful Than the Law ?

Why Your Circuit Breaker Can't Stop an Electric Shock ?

Why Did America Put These Chemicals in Its Sofas ?

The Chemical 3M Knew Was Dangerous — And Kept Selling It

How America Lost Its $1 a Year Doctor .

The Town That Printed Its Own Money — The History of Wörgl’s Experiment !

Why Are the Two Slots in Your Outlet Different Sizes ?

Why Your Appliances Care About 50 Hz vs 60 Hz ?

Why Does Japan Have Two Different Electrical Frequencies ?

How Did a Failed Experiment Change the World ?

How Britain Made Glass Float on Liquid Metal ?

The 1,600 Year Old Iron That Refused to Rust

The Element That Made Steel Brittle — The History of Phosphorus

How AC Took Over America Tesla, Edison, and the War for Electricity

The History of Stone Crushers — The Machine That Helped Reshape the Earth.

The Incredible Engineering of the Anesthetic

The History of Cement — The Man History Forgot

Why Steam Boilers Used to Explode So Often ?

The Bizarre Story Behind the Conveyor Belt

Why the Diesel Engine Was Never Supposed to Run on Petroleum — The Diesel Engine

Why a 200 Year Old Loom Still Lives Inside Your Computer?

How Farmers Pulled 200 Year Old Tree Stumps From the Ground — Stump Pullers

Why America Built a Motor Before It Had the Power to Run It?

Why Miners Called This Machine the “Widow Maker”

The Engine That Started a Patent War — The Four Stroke Engine!

Why America Ran Out of TNT — And What Was Burning in Pennsylvania?!

The Machine That Replaced 25 Men With Three !

What Was the Steam Donkey — And Why Did Loggers Need It

Why Americans Harvested Ice by Hand — The Forgotten Ice Industry

Why Did They Build 200 Foot Towers Just to Make Tiny Bullets

Why These Giant Machines Ate 18,000 Cubic Meters of Earth Every Day

Why It Took 7 Days to Unload One Ship — Hulett Unloaders

America Built Cities Out of Mud — Here's How

Why Did America's Steel Mills Disappear

Why Did America's Forests Disappear So Fast

Why Was the First Safe Elevator Tested With an Axe

How America Drove 60 Foot Timbers Into Riverbeds

Why Did Bessemer's Steel Fail

What Was the Water Ca

Why Did the Industrial Age Need a Hammer This Big

The Bizarre History of America's Most Dangerous Electrical Panel

The 5,000 Year History of the Toothbrush

How Did Women Deal With Periods Before Modern Products

Before Barbed Wire, America Had No Fences

How a Farm Machine Helped Win the Civil War

The Plow That Built America — Then Helped Destroy It

Why Was the Pencil Once a Military Secret Bizarre History

What Did Women Use Before Mascara Bizarre History

What Happened Before People Had Eyeglasses

The Refrigerator The Invention That Poisoned Its Owners

Lipstick The Beauty Product That Became a Weapon of Rebellion

The Pregnancy Test Used Rabbits and Frogs

Before Air Conditioning, How Did Americans Survive the Summer

The History of the Bra The 500 Year Old Secret Found in a Castle

Before Railroads, America Was a One Way Street

The History of Waking Up — How Humans Beat Sleep

The History of Toilet Paper — The Invention Nobody Wanted to Pay For

Before Hospitals, Giving Birth Was a Death Sentence

Before Bell, Someone Else Had Already Invented the Telephone