《家园》中除了展现自然风光之外，也展示了人类的活动。
从片子中可以感受到人类之伟大，不但创造了一个个奇迹，也真正感受到了人类的破坏能力和贪婪，如果把人类于蝗虫相比并不过份，凡是人类能到达的地方就会给自然带来无尽的破坏。我们现在的富足是建立在对地球几十亿年形成的矿物和资源疯狂利用的结果，大自然的平衡被我们人类打破了。以下是我摘自《家园》中感触很深的解说，绝不是危言耸听，希望我们人类能够正视现实，保护我们的地球。
五十年里，仅仅一代人的时间
And in 50 years, in a single lifetime,
地球发生根本性的改变
the Earth has been more radically changed...
是前人从未做过的
than by all previous generations of humanity.
…………
越来越快
Faster and faster.
世界越发展，对能源的渴求就更高
The more the world develops, the greater its thirst for energy.
到处都是挖钻矿物的机器
Everywhere, machines dig, bore and rip from the Earth...
把盘古初开时埋在地下的星星挖出来
the pieces of stars buried in its depths since its creation:
矿物
minerals.
未来二十年人类从地球开采的矿物
In the next 20 years, more ore will be extracted from the Earth...
比人类历史上的总数都要多
than in the whole of humanity's history.
由于垄断
As a privilege of power,
80%开采所得财富
80% of this mineral wealth...
只由20%的人口分享
is consumed by 20% of the world's population.
到本世纪末
Before the end of this century,
由于过份开采矿产，人类将会耗尽地球上的大部分资源
excessive mining will have exhausted nearly all the planet's reserves.
…………
自1950以来，世界人口增长了接近一倍
Since 1950, the world's population has almost tripled.
但从1950起，我们对自已的岛屿--地球…
And since 1950, we have more fundamentally altered our island, the Earth,
所作的根本改变比过去二十万年都要多
than in all of our 200,000-year history.
…………
世上一半穷人住在资源丰富的国家
Half the world's poor live in resource-rich countries.
我们的发展模式并未实现当初的承诺
Our mode of development has not fulfilled its promises.
五十年来，贫富悬殊
In 50 years, the gap between rich and poor...
从未如此严重
has grown wider than ever.
今天，全球一半财富
Today, half the world's wealth...
掌握在占人口比例2％的富豪手上
is in the hands of the richest two percent of the population.
这种不对称还能维持吗？
Can such disparities be maintained?
它们是人口迁徙的原因
They're the cause of population movements...
其规模我们尚未知晓
whose scale we have yet to fully realize.
新人口中多数是因经济或人口问题
The new arrivals are mostly farmers forced off the land...
或资源减少
for economic or demographic reasons,
而背井离乡的农民
or because of diminishing resources.
这是完全新型的城市增长模式
This is a radically new type of urban growth,
移民不为致富，只求生存
driven by the urge to survive rather than to prosper.
每周全球共有一百多万人
Every week, over a million people...
涌入各大城市
swell the populations of the world's cities.
目前每六人有一人住在不安全
One human being in six now lives in a precarious,
不健康或人口密集的环境
unhealthy, overpopulated environment,
缺乏日常生活用品
without access to daily necessities...
比如水、卫生设施和电力
such as water, sanitation or electricity.
饥荒再次蔓延
Hunger is spreading once more.
影响将近十亿人口
It affects nearly one billion people.
…………
我们也许会处于未知地带
We would literally be in unknown territory.
人类只有十年时间逆转暖化趋势
Humanity has no more than 10 years to reverse the trend...
以免人类闯入这未知地带
and avoid crossing into this territory
并过上从未试过的生活滋味
life on Earth as we have never known it.
…………
我们炮制了自已都无法控制的现像
We have created phenomena we cannot control.
从我们起源开始，水，空气和生命形态都密切相连
Since our origins, water, air and forms of life are intimately linked.
但近年来，这些连结已经遭到破坏
But recently, we have broken those links.
让我们面对事实
Let's face the facts.
我们要信自已的知识
We must believe what we know.
我们刚才看到的一切是人类行为的反映
All that we have just seen is a reflection of human behavior.
我们按自已的想象改变了地球
We have shaped the Earth in our image.
我们只有很少时间去作出改变
We have very little time to change.
这个世纪怎能肩负九十亿人的重担？
How can this century carry the burden of nine billion human beings...
如果我们拒绝
if we refuse to be called to account...
为自已的所作所为负责
for everything we alone have done?
我们已经开始警醒，现在对新能源的利用以及对环境的保护已经开始，希望我们利用这短短的十年，把我们的家园变得更加美好。以下是人类目前对新能源的开发，包括了有地热、潮汐、风力、太阳能。
