The birth rate compared to the death rate is changing quite significantly at the moment, but in what direction?
Asked by: Jacob Hackett, Swadlincote
According to UN Census figures, the number of births for 2005-2010 is expected to be 20.3 per year, per thousand people, averaged over the planet. The same figure for deaths from all causes is 8.5. So for each person that dies, 2.39 babies are born.
However, the birth rate is dropping while deaths are (slightly) increasing. By 2050, the ratio is expected to be 1:1.34.
Read more:
Subscribe to BBC Focus magazine for fascinating new Q&As every month and follow @sciencefocusQA on Twitter for your daily dose of fun science facts.
Luis trained as a zoologist, but now works as a science and technology educator. In his spare time he builds 3D-printed robots, in the hope that he will be spared when the revolution inevitably comes.
Subscribe to BBC Science Focus Magazine and try 3 issues for just $9.95
Discover our latest special editions covering a range of fascinating topics from the latest scientific discoveries to the big ideas explained.
Listen to some of the brightest names in science and technology talk about the ideas and breakthroughs shaping our world.
By entering your details, you are agreeing to our terms and conditions and privacy policy. You can unsubscribe at any time.