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.

What about our children and grandchildren and their children and grandchildren? Do we not want them to live healthy and happy lives?

So we draw lines around our property, our counties, our cities, our states, our countries. And, boy, do we act as if those lines are important. I mean, we go to war. We will kill and die to protect those boundaries. Nature couldn't give two hoots about our national boundaries.

Fukushima is the most terrifying situation I can imagine.

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.

Because we aren't certain about the effects of GMOs, we must consider one of the guiding principles in science, the precautionary principle. Under this principle, if a policy or action could harm human health or the environment, we must not proceed until we know for sure what the impact will be. And it is up to those proposing the action or policy to prove that it is not harmful.

Our choices at all levels-individual, community, corporate and government-affect nature. And they affect us.