Um, so, the world is not as wild as it was. Well, we've destroyed it. Not just ruined it. I mean, we have completely... well, destroyed that world. T… - David Attenborough

Immensely powerful though we are today, it's equally clear that we're going to be even more powerful tomorrow. And what's more there will be greater compulsion upon us to use our power as the number of human beings on Earth increases still further. Clearly we could devastate the world. […] As far as we know, the Earth is the only place in the universe where there is life. Its continued survival now rests in our hands.

I don't think any human society is prepared to make decisions which they may not like if they're made by people who don't speak the same language... It's very easy, as we all know, to be very tolerant of minorities until they become majorities and you find yourself a minority. It's easy to say 'Oh yes, these lovely people – I love the way they wear such interesting costumes.' You know, that's fine until some day you find that they're actually telling you what to do and that they've actually taken over the town council and what you thought was your home was not. I'm not supporting it; I'm saying it's what it is.

Members of the auk family, such as these guillemots and puffins... propel themselves, not with their feet like ducks, but with their wings, and they have paid a considerable price to be able to do so... Auks have had to evolve shorter, stubbier wings. That gives them a rather clumsy, whirring flight in the air, but it does enable them to "fly" underwater so well that they can outpace small fish.