Or because of diminishing resources.

背井离乡的农民
This is a radically new type of urban growth,

这完全是新型的城市增长模式
Driven by the urge to survive rather than to prosper.

移民不为致富只求生存
Every week, over a million people...

每周全球共有一百多万人
Swell the populations of the world's cities.

涌入各大城市
One human being in six now lives in a precarious,

每六人中就有一人居于危险
Unhealthy, overpopulated environment,

不卫生或人口过剩的环境中
Without access to daily necessities...

没有水卫生设施
Such as water, sanitation or electricity.

和电力等日常生活用品
Hunger is spreading once more.

饥荒再次蔓延
It affects nearly one billion people.

影响近十亿人口
All over the planet, the poorest scrabble to survive on scraps,

全球最贫困的人依靠拾荒挣扎度日