Ultimately we need to recognize that while humans continue to build urban landscapes, we share these spaces with others species.

My earliest memory from childhood is of fishing with my father. And I remember vividly we were in a store, and we were buying a pup tent to go on our first camping trip.

We are upsetting the atmosphere upon which all life depends. In the late 80s when I began to take climate change seriously, we referred to global warming as a "slowmotion catastrophe" one we expected to kick in perhaps generations later. Instead, the signs of change have accelerated alarmingly.

And that, quite simply, is the issue. We live in a finite world with finite resources. Although it may sometimes seem quite big, earth is really very small - a tiny blue and green oasis of life in a cold universe.

Nature surrounds us, from parks and backyards to streets and alleyways. Next time you go out for a walk, tread gently and remember that we are both inhabitants and stewards of nature in our neighbourhoods.

Planting native species in our gardens and communities is increasingly important, because indigenous insects, birds and wildlife rely on them. Over thousands, and sometimes millions, of years they have co-evolved to live in local climate and soil conditions.

Japan is a model already to the lie that economic growth is the key to our future. If they can really show an alternative to nukes and fossil fuels, then they will be the poster boy for the renewable energy for the future.