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To burn off an extra 500 calories is typically an extra two hours of cycling.
And I do mean an extra two hours.
In Taiwan, women get an extra three sick days per year; in Indonesia, it's an extra two days per month; in South Korea, an extra day each month.
They had fallen behind because a miscalculation in the length of a year in the Julian calendar meant about an extra three days were being gained every four centuries.
The problem is only worsened by the fact that the world's population will have risen from seven billion to nine billion by the end of the century, an extra two billion who will have to be fed from threatened food sources.
So the challenge is to achieve for an extra eight billion people in the twenty-first century what was achieved for two billion in the twentieth century.
We have an extra million dollars.
We've got an extra million dollars, OK?
In substance, the two choices are identical: wait an extra day, get an extra ten bucks.
That's an extra two million barrels a day.
Virgin Atlantic, for example, offers an extra three inches of legroom for an extra $60 -- one way.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com