Though most of us won't be around to see it, the United Nations has projected that our incredible population growth will level off at around 10 billion people by the year 2100.
Already, at less than seven billion, we are experiencing severe poverty, hunger, a shortage of resources, increased urbanization and climate change issues.
Will we be doomed by 2100, or can we make it work? Since we've only got one planet (so far), let's hope for the latter.