Ballpark — October 29, 2026

Weight of an African elephant

13,000 pounds

A single ear can weigh up to 100 pounds.

Cost to build the Golden Gate Bridge (today’s USD)

550 USD (millions)

The original cost was $35 million in 1937 dollars.

Years the Roman Empire lasted

1,000 years

The western empire fell in 476 AD.

Length of the Great Wall (all sections)

13,000 miles

The wall was built over many centuries by various dynasties.

Size of the Sahara Desert

3.6 million square miles

It covers nearly one-third of the African continent.