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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Every day is a bit different, but here is a wideout view of how Americans spend their days. Compare with your own time use.
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Baby names gain sudden popularity for various reasons. See how it’s changed over the years.