SIR - Malcolm Wood believes that mankind is not responsible for much of global warming (T&A, November 15) and yet he assumes that carbon emissions are the cause when he dismisses the contribution from the UK as miniscule.

He can't have it both ways.

His assertion that the Earth will survive another massive climate change is right but for the first time it has seven billion greedy humans and they may well not make it.

Keith Thomson, Heights Lane, Bradford