The medical literature tells us that the most effective ways to reduce the risk of heart disease, cancer, stroke, diabetes, Alzheimer's, and many more problems are through healthy diet and exercise. Our bodies have evolved to move, yet we now use the energy in oil instead of muscles to do our work.

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.

A baby nursing at a mother's breast... is an undeniable affirmation of our rootedness in nature.

People.. especially people in positions of power.. have invested a tremendous amount of effort and time to get to where they are. They really don't want to hear that we're on the wrong path, that we've got to shift gears and start thinking differently.

Fukushima is the most terrifying situation I can imagine.

Japanese people cut their energy use by 25 percent immediately after Fukushima. They showed there was huge opportunity there. And instead, the government simply wants to get those plants up and running again.

In the environmental movement, every time you lose a battle it's for good, but our victories always seem to be temporary and we keep fighting them over and over again.