In classic xkcd-fashion, Randall Munroe timelines the Earth’s temperature, dating back to 20,000 BCE up to present. Slow changes, slow changes, history, slow changes, still slow changes, and then, oh shoot.
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I simulated a day for employed Americans to see when and where they work.
The data goes back to 1960 and up to the most current estimates for 2009. Each line represents a country.
There are many exercise apps that allow you to keep track of your running, riding, and other activities. Record speed, …
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.