WHAT IS PI ?

24 MAR 2021 Pi (π) is a constant describing the ratio between a circle’s circumference and its diameter. It is an irrational number usually summarized to two decimal places as 3.14. The Greek letter for P was chosen by the 18th century Welsh mathematics teacher William Jones, most likely to stand for …

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VERDICT IS IN: YOU ONLY NEED ONE VACCINE DOSE IF YOU’VE ALREADY HAD COVID-19

22 MAR 2021 In the race to get coronavirus vaccines into arms as quickly as possible, scientists think they’ve found a way to accelerate the process: Give the people who’ve already had COVID-19 just one dose. Most vaccine-eligible Americans are getting either Pfizer or Moderna‘s vaccine, both of which require two doses administered several weeks …

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