P. Radford

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Anisotropy Probe (WMAP) which indicate that the first onset of star formation most probably occurred at redshifts z < 15–20 (,250 Myr after the Big Bang) 25–27. The presence of Lya emitting galaxies and luminous quasars at the end of cosmic reionization (z. 6.0), at a time when the IGM was at least 1% neutral, was clearly demonstrated 5,28. This epoch of(More)
As I was watching a lapwing Vanellus vanellus sitting on hard-set eggs on a piece of rough pasture, a man leading a terrier came along. Through my binoculars, I saw the lapwing becoming increasingly anxious and, when the intruders were about 200 metres away, the bird ran off to trail a wing in front of them. The restrained dog clearly wanted to chase the(More)
Gilbert White, once curate of Selborne in Hampshire, is rightly famed for his classic descriptions of bird, mammal and insect behaviour and status in the eighteenth century, and immortalised in The Natural History of Selborne. Perhaps not so well known, however, is his interest in the public health of his parish, his respect for the individual, even if(More)
No doctor can escape some degree of association with birds in the course of his professional life. The general practitioner, as he examines yet another case of Salmonella food poisoning, might well ponder about this, particularly as he tells his patients that they have allowed insufficient time for the thawing out of a frozen chicken or turkey before its(More)
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