If we are alone, why? If we are not alone, where is everyone? There should be well over 11 billion planets in our galaxy with
This is an exploration of what ‘births per woman’ means, and how it is measured. Key to discussion about population is population growth, which is most commonly analysed from ‘births per woman’, which is also called ‘fertility rate’. But what is ‘births per woman’? Answer: not quite what you might expect, which means a small adjustment is required for interpreting births per woman when predicting population growth.