A Diagram of All the Batteries

If parenthood has taught me anything, it’s that when your kid’s toy needs a battery, you will not have the right size. This is a simple fact of life.

In the most recent challenge to this pillar of truth, a Gekko toy (from the show PJ Masks, obviously) needed a button cell battery. I dug into my battery drawer — a reflection of toys past — naively thinking that I must have the right size. The excavation showed that I was in fact incorrect.

The natural next step was of course to look up battery sizes and chart all of them.

Notes

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Finding the New Age, for Your Age

You’ve probably heard the lines about how “40 is the new 30” or “30 is the new 20.” What is this based on? I tried to solve the problem using life expectancy data. Your age is the new age.

Air Quality Mapped Over Time

With wildfires burning in the western United States, smoke fills the air. This is an animation of the air quality during the past couple of months.

Life expectancy changes

The data goes back to 1960 and up to the most current estimates for 2009. Each line represents a country.

How We Spend Our Money, a Breakdown

We know spending changes when you have more money. Here’s by how much.