Every second, 4 babies are born and 2 people die in the world.
Why it is true
World population grows about 80 million per year. We are currently over 8 billion people.
Source: UN Population Division
Would you rather be asked first?
This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.