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History of Calculating π: Number of Accurate Digits
It's almost π day (3/14 in the US)! Some people like to try to memorize π. Is it possible for them to memorize all the known digits? How many digits ARE known, and how has our knowledge of π changed over time?
The Length of the Skating Season on the Rideau Canal Skateway (Ottawa)
Every year, Ottawa's Rideau Canal Skateway (a UNESCO world heritage site) is host the world's longest skateway! But not in 2023. How unusual is this? How long have other seasons been? (slow reveal by @scottwestwell)
Heartbeats per Minute and Body Weight of Different Species
What do you notice about the relationship between the size of an animal the number of heartbeats it has per minute?
Ozone Depleting Substance Emissions, 1960-2016
Finally: a climate crisis success story! Why don't we hear about the ozone anymore? And what caused the ozone-depleting substance emissions to dramatically decrease across the world?
Comparing Career Points Scored with Minutes Played of Top 100 Active NBA Scorers (as of Jan 31, 2023)
How does the number of points NBA players score compare with their number of minutes played? Who has the most impressive ratio to minutes to points?
Sales-per-store for Fast Food Franchises in the US
Some fast food places seem like they are everywhere! Walk another block in the city, and you hit another one. Are they all profitable? Which franchises are the most profitable fast food businesses per location?
The Income You Need to Purchase a Home in Canada
How much income do you need to purchase a home in Canada? And can a typical family afford the typical home? (graph from Mandy Lam/@datawithprofmandy on insta)
Length of Compulsory Military Service in Selected Countries
How long is compulsory military service? And why is Taiwan extending the length of conscription next year?
Arizona Electricity Consumption by Primary Energy Source [with English and Spanish sentence stems]
Where does the energy used in Arizona come from?
Growing Zones in the US (1981-2040, expected)
How have growing zones for plants in the US changed over time? How do scientists predict they will continue to change?
The Most Popular People Names for Dogs
Which are the most popular people names for dogs? Is your name more of a person name or a dog name?
Major Categories of Federal Income and Outlays for the United States (Fiscal Year 2019)
The US government collects billions of dollars every year. Where does it come from? And how does the US government spend it?
Blog: Using Slow Reveals to Illuminate Tiny but Powerful Details in a Graph
Blog Post: Using Slow Reveals to Illuminate Tiny but Powerful Details in a Graph by Jenna Laib Last week, a middle school social studies teacher and I co-planned a slow reveal graphs lesson...
Mobile Internet Traffic in Iran — September 21, 2022
Why was there a huge dip in internet traffic within Iran on September 21, 2022?
Earth Overshoot Day (1971-2022)
Earth Overshoot Day marks the date when humanity has used all the biological resources that Earth regenerates during the entire year. When was Earth Overshoot Day in 1971? ...2022? And how has it changed over time?
Speed Compared with Accuracy of Order at the Fast Food Drive Through
Fast food: can it be both fast and accurate? What does this look like with different fast food chains?
2021 Automobile Collisions with Deer in Massachusetts (USA), by month
When do deer get hit by cars in Massachusetts (USA), and how can the state help put a stop to this?
The Best European City for McDonald’s According to Google Maps Reviews
What's the best European City for McDonald's? David Abaev from Databar crunched some numbers for us...
The Extent of the Youth’s Climate Fear
How do young people (ages 16-25) feel about the climate crisis across the world?
Ukrainian Refugees Return Home Despite Warnings Not To
Ukrainian refugees are returning home, despite warnings about safety. How many are returning home? And why?