A group of scientists who set out to study sex pheromones in a tiny worm found that the same family of pheromones also controls a stage in the worms' life cycle, the long-lived dauer larva. The ...

Usually what Beth Mole writes is very clear. But this time I could not tell whether the whole human-eye part of the worm life cycle occurs between the lid and the eyeball, or whether the parasite ...