Olfaction and the function of the paranasal sinuses
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On a trip to the Luangwa valley, I watch the herds of animals interacting in what must be close to their original habitat, as it has existed for millions of years.A large herd of zebra is grazing calmly on the succulent new grass recently sprouted after the first rains of the season. They are seemingly unconcerned and unstressed by a small group of lions lazily lounging in the meager shade of a flat-topped acacia...