Other things, like capitalism, free enterprise, the economy, currency, the market, are not forces of nature, we invented them. They are not immutable and we can change them.

Pearl Harbor was the defining event in my life. It shaped who I am, and all of my hang-ups and my drives, I think, stem from that.

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.

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

Aboriginal people are key because they have a different sense of where we belong and how we interact with nature.

Treaties, agreements and organizations to help settle disputes may be necessary, but they often favor the interests of business over citizens.

Faced with the evidence, many deniers have started to admit that global warming is real, but argue that humans have little or nothing to do with it.