From Geoff Harding, Sydney, Australia
Disappointingly, due to the disruptive effect of lighting, sleep experts discourage reading in bed, which no doubt many find the only time for this enjoyable pursuit. Perhaps the best solutions are ebooks with a blue-light-blocking mode or the audio version of New Scientist. In the latter case, a potential problem is the highly worrying content of some articles, for example concerning climate change or possible pandemics, which may give one a sleepless night (25 January, p 32).
