Social history

How the cash machine became a million dollar idea
The BBC's Aaron Heslehurst explains how the ATM or cash machine became a million dollar idea.
How Spam became a million dollar idea
The BBC's Aaron Heslehurst explains how Spam became a million dollar idea.
How the safety razor became a million dollar idea.
The BBC's Aaron Heslehurst explains how the safety razor became a million dollar idea.
How the microscope became a million dollar idea
The BBC's Aaron Heslehurst explains how the microscope became a million dollar idea.
How Monopoly became a million dollar idea
The BBC's Aaron Heslehurst explains how Monopoly became a million dollar idea