January 1991 – vol. 84, issue 1, pp 24–26 In the semi-arid desert of the Southern Arava in Israel, there is no relief, even in winter, from the eye-aching glare of the sand and the heat of the sun beating mercilessly onto the back of your neck. Suddenly, you hear a strange call and turn to see a quick movement--something scurrying out across the sand before swiftly returning to shadow and cover. A mouse, perhaps? You are just about to dis... This article is only available to registered users.To read more, please log in or purchase a subscription.