From Carl Topham
After reading the letter “Climate blog”, which talks about paper (including New Scientist) using up trees and increasing carbon emissions, I wondered how much carbon you would actually save by publishing only on the internet (28 May, p 26). How much carbon would have to be made available to allow you to run your computer? A magazine will cost only a one-off carbon emission (excluding the carbon that the tree would have absorbed) whereas each time you have to access the website you will be slowly adding to the amount that an online magazine costs in carbon. Maybe someone could work it out?
Liverpool, UK
