Sir David Attenborough: Nuclear power is certainly a way of generating energy with no effect on global warming but there are other problems associated with it. Our long term future will rest with non-polluting sources such as wind power, tidal power and generating energy directly from sunshine.

Sir David Attenborough: Many of our largest businesses are already convinced that their own future, as well as the population's, depends on sensible environmental policies and have departments devoted to seeing how they can adopt the best and least damaging policies. Some banking organisations are certainly devoting considerable sums of money to assisting conservation.

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.

Sir David Attenborough: Reduce our consumption of energy.

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.

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.

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.