Ballpark — October 6, 2026

Answers to that day's 5 daily estimation questions.

Average life of a smartphone (before upgrade)

3 years

Users are holding onto phones slightly longer now.

Average speed of an Olympic sprinter (Usain Bolt)

27 mph

Peak speed during a 100m dash.

Miles across the continental US (east-west)

2,800 miles

From NYC to LA.

Percentage of Earth covered by water

71%

Includes oceans, lakes, and rivers.

Ants on Earth (estimated)

20 quadrillions

Total biomass is greater than all wild birds and mammals.