The truth is: the natural world is changing. And we are totally dependent on that world. It provides our food, water and air. It is the most precious thing we have and we need to defend it.

Its about cherishing the woodland at the bottom of your garden or the stream that runs through it. It affects every aspect of life.

If I can make programmes when I'm 95, that would be fine. But I would think I'll have had enough by then.

I don't approve of sunbathing, and it's bad for you.

Until humanity manages to sort itself out and get a co-ordinated view about the planet, it's going to get worse and worse.

One in eight plant species face extinction.

I'm against this huge globalisation on the basis of economic advantage.