There was time not that long ago when diseases kept population expansion under control, but they are becoming a thing of the past.

The virus originated 50-150 years ago and has undergone a recent population expansion.

This was a time of technological advances and population expansion.

In terms of environmental issues I have to ask why is the fundamental issue of population expansion so low key?

The commission made a host of recommendations to curb both population expansion and economic growth.

The establishment of the university in the mid 1960s led to a population expansion from about 50,000 inhabitants to today's 75,645.

Additional pressure has been placed on species survival by the rapid human population expansion, especially since 1970.

For example, I do not comprehend how you deal with population expansion.

Due to population expansion, the school was expanded in 1996.

It is threatened by habitat loss and human population expansion.