I can't imagine anything more important than air, water, soil, energy and biodiversity. These are the things that keep us alive.

Unless we are willing to encourage our children to reconnect with and appreciate the natural world, we can't expect them to help protect and care for it.

We humans have become dependent on plastic for a range of uses, from packaging to products. Reducing our use of plastic bags is an easy place to start getting our addiction under control.

Fukushima is the most terrifying situation I can imagine.

Change is never easy, and it often creates discord, but when people come together for the good of humanity and the Earth, we can accomplish great things.

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

How do commercial interests usually protect themselves from liability claims? Through insurance. In fact, in our society, the litmus test for safety is insurance. You can be insured for almost anything if you pay enough for the premium, but if the insurance industry isn't willing to bet its money on the safety of [biotechnology], it means the risks are simply too high or too uncertain for them to take the gamble.