Carrying capacity is the maximum population size of a given species that an area can support without reducing its ability to support the same species in the future. Estimates of carrying capacity have varied from less than 1 billion to over 1,000 billion (a trillion people). The average of the various estimates is around 10-15 billion. (Link below)
http://www.biog1105-1106.org/demos/106/unit09/media/16.carryingcapacity.pdf
With advances in medicine and technology, humans are living longer and the population may spike more than estimated in the next 50 years.
Can we continue to live the way we do and not deplete our resources for future generations?
Should we consider renewable sources of energy?
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