Ballpark — March 23, 2026

Countries in the European Union (current)

27 countries

The EU currently has 27 member states.

Number of strings on a standard concert harp

47 strings

Most have 7 pedals to adjust the pitch of the strings.

Average hours a lightbulb lasted in the 1920s

~2,500 hours

The Phoebus Cartel later limited lifespans to 1,000 hours.

Average steps a person takes in a lifetime

~216 million steps

Based on an average of 7,500 steps per day over 80 years.

Percentage of oxygen in Earth's atmosphere

21%

This balance has been stable for millions of years.