CaroleW: Is it likely that the uk will experience coastal flooding from rising sea levels in the future I live on the south coast and am a little worried about this thank you carole x

Sir David Attenborough: It is certainly the case that sea levels are likely to rise but the most affected lands will be those that are closest to sea level. That is a bigger danger therefore in East Anglia than it is for much of the south coast.

Donna: What one thing do you think we can all do to slow the process?

Sir David Attenborough: Reduce our consumption of energy.

Emma: Sir David, fantastic programme! Which foreign animal species do you think we will see in the next 50 years in Britain due to global warming?

Sir David Attenborough: We've already seen the humming bird hawk month. Since we are an island the creatures that are likely to migrate here as a result of global warming will either have to fly or swim. There may be more bird visitors from Europe but the biggest change I think will be likely to be seen in the seas around our coasts.

Alan: What do you think about the scientists who theorise that the earth is merely following a natural pattern of warming and cooling?

Sir David Attenborough: I know of no recognised scientist who does not accept that global warming has now gone beyond any variation likely to have been caused by processes we have seen in action before humanity's arrival.

Jonom137: Is there a foreseeable point where we pass beyond the point where we can reverse a radical increase in climate change owing to increased greenhouse gasses?

Sir David Attenborough: The carbon dioxide molecules remain in the atmosphere for around 100 years. There is therefore no way that the greenhouse gases at present there will be reduced within our lifetime or that of our children. The best we can hope to do is to slow down the inevitable increase in carbon dioxide that we create.

Stephen: Are you optimistic or pessimistic regarding the future?

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.