You are what you do, not what you say.

Just as human activity is upsetting Earth's carbon cycle, our actions are altering the water cycle.

My Prime Minister regards the economy as our highest priority and forgets that economics and ecology are derived from the same Greek word, oikos, meaning household or domain. Ecology is the study of home, while economics is its management. Ecologists try to define the conditions and principles that enable a species to survive and flourish. Yet in elevating the economy above those principles, we seem to think we are immune to the laws of nature. We have to put the ‘eco’ back into economics.

Debating the best way to do something we shouldn't be doing in the first place is a sure way to end up in the wrong place.

Because countries often have differing political and economic systems, agreements are needed to protect those invested in trade.

Nature surrounds us, from parks and backyards to streets and alleyways. Next time you go out for a walk, tread gently and remember that we are both inhabitants and stewards of nature in our neighbourhoods.

Even meeting Kyoto targets barely makes a dent in what we have to achieve.