One In Eight Plant Species Face Extinction.

You've Got To Be Fairly Solemn [about The Environment]. I Mean The Mere Notion That There Are Three Times As Many People On Earth As There Were When I Started Making Television. How Can The Earth Accommodate Them? When People, Including Politicians, Set Their Faces Against Looking At The Consequences-it's Just Unbelievable That Anyone Could Ignore It.

The Correct Scientific Response To Something That Is Not Understood Must Always Be To Look Harder For The Explanation, Not Give Up And Assume A Supernatural Cause.

I Often Get Letters, Quite Frequently, From People Who Say How They Like The Programmes A Lot, But I Never Give Credit To The Almighty Power That Created Nature.

I Don't Think We Are Going To Become Extinct. We're Very Clever And Extremely Resourceful - And We Will Find Ways Of Preserving Ourselves, Of That I'm Sure. But Whether Our Lives Will Be As Rich As They Are Now Is Another Question.

The Only Acceptable Way To Solve Ecological Problems Is If You Can Persuade People To Have Fewer Children. In The Victorian Times, There Were Families Of 15 Children. Someone Like Edward Lear, He Was The Last Of 21 Children. And So What We Have To Think About Is Offering People The Alternative Choice. And In The West, That's What's Happening. The Birth Rate Has Been Dropping Steadily And Still Is. I'm Wanting Human Beings To Be Better Off So They Don't View Children As An Insurance For The Future.