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Paul Ehrlich, We Need You!

Consider these facts taken from the U.S. Census Population Clock:
  • The current population of the United States is 295,734,134.
  • One person is born in the United States every 7 seconds.
  • One person dies in the United States every 14 seconds.
  • One person (net gain) immigrates to the United States every 26 seconds.
Question 1: How often (in seconds) does the United States have a net gain of one person?

Question 2: Find the relevant data and perform the same calculation for the entire world?

Source: U.S. POPClock,