The Atlantic interviewed Dr. Demetrios Matsakis, Chief Scientist for Time Services at the US Naval Observatory about where time comes from, the precision required and how they obtain it, and why we need such precision. Five seconds into it, my wife commented, “That sounds nerdy.” That’s how you know it’s gonna be good.
Where time comes from
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Shifting Causes of Death
The most common causes of death changed over the years. They vary across sex and age group. This animation shows the details of these changes.
How Much We Eat vs. How Much We Need
On average, we use less energy as we age, and so we should eat less. We don’t always adjust soon enough though.
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.