Feeding our energy appetite is top of mind for many people these days.

A book is like a single tree in a forest, in that it exists in conjunction with and because of a great many others around it.

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.

Global trade has advantages. For starters, it allows those of us who live through winter to eat fresh produce year-round. And it provides economic benefits to farmers who grow that food.

If we want to move towards a low-polluting, sustainable society, we need to get consumers to think about their purchases.

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

But human borders mean nothing to air, water, windblown soil or seeds or migrating fish, birds or mammals.