Ballpark — July 9, 2026
Answers to that day's 5 daily estimation questions.
Height of the Burj Khalifa
2,717 feet
The tallest structure ever built by humans.
Soldiers in the Terracotta Army
8,000 statues
Each face is uniquely detailed.
Liters of air a human breathes in one day
11,000 liters
Based on roughly 15-20 breaths per minute.
Number of films Alfred Hitchcock directed
53 films
Spanning silent films to color talkies.
Size of the Sahara Desert
3.6 million square miles
It covers nearly one-third of the African continent.