Sir David Attenborough: I believe humanity will survive but will have to accept major changes in our living conditions. We are a very adaptable species.

Sir David Attenborough: I guess the biggest contribution will be made by whichever scientific group solves the problem of harnessing energy that we receive directly from the sun. I cannot believe that human beings who are clever enough to put man on the moon within a decade of deciding to do so cannot solve the problem of harnessing the sunshine.

Sir David Attenborough: By helping them with the technology for their industries which do not depend on fossil fuels.

Sir David Attenborough: Life On Earth because it was the first series which took a global view of natural history and to that extent started a fashion.

Sir David Attenborough: I expect the first species to disappear will be those that have survived here in the colder northern parts of the British Isles. They have hung on since the ice age but it is unlikely that they can do so for much longer. Snow buntings are among them but there are also a number of plant species that live on the Cairngorm summits which may disappear.

Sir David Attenborough: Climate change is certainly having an effect but regulating fishing is a major problem. We have exterminated the herring fishery in the north sea and done the same thing with the cod fishery off Newfoundland. The problem is difficult because in many areas it depends on international agreement and it is difficult to persuade people who have depended for their living on fishing for many generations. But if that decision to restrict fishing is not accepted then fishing stocks will be exterminated and everyone will be the loser.