许多
The future of life on Earth depends on our ability to take action. Many individuals are doing what they can, but real success can only come if there is a change in our societies and our economics and in our politics.
It seems to me that the natural world is the greatest source of excitement; the greatest source of visual beauty; the greatest source of intellectual interest. It is the greatest source of so much in life that makes life worth living.
Hunger and poverty are the root causes of much of the world's unrest and misery.
We must listen to the land and the animals—they have much to teach us about sustainable practices.
The widespread adoption of drones will reshape many traditional industries.
The problem is that at a lot of big companies, the process becomes a substitute for thinking. You're encouraged to behave like a little gear in a complex machine.