Hours of daylight mapped as a function of latitude and time of year
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How Much You Should Be Saving for Retirement
There are a lot of variables to consider, but for people of middle income, here’s a suggestion, based on when you start saving and when you want to retire.
Marrying Later, Staying Single Longer
Using a century of data, we watch the shift of marital status in the United States.
It’s hard to think of much else. These maps show the racial divide between black and white people in major cities.