Your editorial “Is global warming hot air?” (November 6) does a great disservice to our profession. To claim a “growing wealth of scientific evidence” that climate change is not predominantly man made, without citing this supposed evidence, either suggests that BD knows something the rest of us don’t, or BD is simply ill-informed and practising sloppy populist journalism

I challenge you to look at any peer-reviewed scientific journal and come up with one shred of credible evidence that the rest of the scientific community is somehow wrong on this. And if you can’t, I would refer you to the IPCC’s projections for climate change over the next century, and the dire consequences it will entail for all of us, if allowed to continue unabated.

Unlike your editorial, and the “wealth of scientific evidence” you claim exists, every sentence of the IPCC’s latest report has been agreed by scientific delegates from over 100 countries, including America.

Arguably, a scientific study has never before been so thoroughly checked and reviewed. It concludes that “warming of the climate system is unequivocal, as is now evident from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice, and rising global average sea level”.

There are no easy answers to climate change, but a very easy answer to the title of your editorial, and that is, emphatically, “No”.

Ranald Lawrence, Cambridge

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Letters to the editor - 20 November 2009