We are playing Russian roulette with features of the planet’s atmosphere that will profoundly impact generations to come. How long are we willing to gamble?

One of the joys of being a grandparent is getting to see the world again through the eyes of a child.

I can't imagine anything more important than air, water, soil, energy and biodiversity. These are the things that keep us alive.

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.

Treaties, agreements and organizations to help settle disputes may be necessary, but they often favor the interests of business over citizens.

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

We have much to learn by studying nature and taking the time to tease out its secrets.