Lithium-ion batteries power the iPhone (among other things), but what if we could use a different power source like coal or diesel? With some back-of-the-napkin math, Jon Keegan for the Wall Street Journal imagines what if. It’s all about the body fat-powered iPhone with nine days of battery life.
Imagining alternative iPhone power sources
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Toilet Paper Calculator
Maybe you’re starting to run low. Here’s how much you’ll need when you go to restock.
Occupation Growth and Decline
We looked at shifts in job distribution over the past several decades, but it was difficult to see by how much each occupation group changed individually. This chart makes the changes more obvious.
Shifted Social Media Usage, Among Teens
Facebook took the biggest hit in the past three years. Snapchat and Instagram got more likes.