Do you believe that the earth can continue to sustain a constantly increasing number of human beings without significant impact on the environment and a lowering quality of life for the rest of us?
Richard Carlisle from York (Age 35-44)
What is the maximum sustainable population of the world, and how are we going to stop ourselves reaching that point before it is forced upon us?
David Irving from Dorset (Aged 35-44)
What is the sustainable human population of earth?
Paul Miller from North Yorkshire (aged 35-44)
How many people do you think could fit or live in the world?
Lexi from Greater London (aged 5-14)