Human use of fossil fuels is altering the chemistry of the atmosphere; oceans are polluted and depleted of fish; 80 per cent of Earth's forests are heavily impacted or gone yet their destruction continues. An estimated 50,000 species are driven to extinction each year. We dump millions of tonnes of chemicals, most untested for their biological effects, and many highly toxic, into air, water and soil. We have created an ecological holocaust. Our very health and survival are at stake, yet we act as if we have plenty of time to respond.

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.

Fukushima is the most terrifying situation I can imagine.

All those hours exploring the great outdoors made me more resilient and confident.

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

Water is our most precious resource, but we waste it, just as we waste other resources, including oil and gas.

We're in a giant car heading towards a brick wall and everyone's arguing over where they're going to sit.