We are all together in this, we are all together in this single living ecosystem called Planet Earth. As we learn how we fit into the greater scheme of things, and begin to understand how the system works, we can plan ahead, we can use the resources responsibly, to show some respect for this inheritance that goes back 4.6 billion years.

The observations that have developed over the years have given us perspective about where we fit in. We are newcomers, really recent arrivals on a planet that is four and a half billion years old.

That attitude of arrogance, that attitude of "It's all about me. It's all about what I can get out of life now" - well, I'm personally driven by wanting to get out of my life the best I can achieve as a gift for those who come after me.

No water, no life. No blue, no green.

'Green' issues at last are attracting serious attention, owing to critically important links between the environment and the economy, health, and our security.

Eating wildlife is probably not the smartest thing that we can do in terms of maintaining the integrity of natural systems.

The oxygen cycle, the nitrogen cycle, the carbon cycle, the water cycle - all of these are linked to the existence of life in the sea.