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
Divorce Rates for Different Groups
We know when people usually get married. We know who never marries. Finally, it’s time to look at the other side: divorce and remarriage.
Graphical perception – learn the fundamentals first
Before you dive into the advanced stuff – like just about everything in your life – you have to learn the fundamentals before you know when you can break the rules.