Ballpark — September 21, 2026
Answers to that day's 5 daily estimation questions.
Average sleep for a house cat
15 hours/day
Some cats sleep up to 20 hours a day.
Pounds of trash an average person creates daily
5 lbs
Adds up to nearly a ton per year.
Miles of track in the NYC Subway system
665 miles
Total track including yards and sidings.
Average height of a wind turbine
300 feet
Hub height only; blades add another 150-200 feet.
Weight of a professional bowling ball
16 lbs
Ranges from 6 to 16 pounds.