If we have any hope of finding ways for seven billion people to live well on planet with finite resources, we have to learn to use our resources efficiently. Plastic bags are neither efficient nor environmentally friendly.

Scientists have been warning about global warming for decades. It's too late to stop it now, but we can lessen its severity and impacts.

The voluntary approach to corporate social responsibility has failed in many cases.

If we humans are good at anything, it’s thinking we’ve got a terrific idea and going for it without acknowledging the potential consequences or our own ignorance.

Environmentali sm is really about seeing our place in world in a way that humans have always known up until very recently - that we are part of nature-utterly dependent on the natural world for our well being and survival.

The current economic system is fundamentally flawed and inevitably destructive.

More than a billion people lack adequate access to clean water.