ALTHOUGH IT HAS BEEN FORMALLY RECOGNIZED since the end of the 19th century that invertebrates can learn (Romanes 1895), the modern neurobiological analysis of invertebrate learning did not begin until the 1960s. Starting in that decade, pioneering investigators began to use intracellular electrophysiology to probe the basic mechanisms of learning in higher invertebrates (Bruner and Tauc 1966; K...

In 1997, the United States National Ambient Air Quality Standard (NAAQS) for ozone was revised from a 1-h average of 0.12 parts per million (ppm) to an 8-h average of 0.08 ppm. Analysis of ozone data for the ensemble of the contiguous United States and for the period 1980–1998 shows that the average number of summer days per year in exceedance of the new standard is in the range 8–24 in the Nor...

The Aldrich Archive is a collection of technical and marketing material covering the period from 1977 to 2000; the physical documents are in the process of being digitised and made available on the internet. The Aldrich Archive includes contemporaneous case studies of end-user computer systems that were used for marketing purposes. This paper analyses these case studies of innovative informatio...