Tyrannosaurid theropods were dominant terrestrial predators in Asia and western North America during the last of the Cretaceous. The known diversity of the group has dramatically increased in recent years with new finds, but overall understanding of tyrannosaurid ecology and evolution is based almost entirely on fossils from latitudes at or below southern Canada and central Asia. Remains of a n...

Observations on perinatal mortality in Beef Shorthorn cattle were made on a property at a latitude of 19” 50’ S in north-western Queensland during March 1964. There was a perinatal mortality of 16%, due mainly to accidents at parturition and to excessively high body temperatures associated with the hot environment. It is suggested that neonatal hyperexia might be a major source of reproductive ...

Spatial and temporal shifts in the migratory patterns of birds have become more frequent as climate change habitat alteration continue to impact ecosystems species dependent on them. In this study, we used eBird community science data collected over ten years examine potential changes three North American bluebird species: eastern (Sialia sialis), western mexicana), mountain currucoides) bluebi...

To determine why North Americans tend to locate European cities south of North American cities at similar latitudes (Tversky, 1981), we had observers provide bearing estimates between cities in the U.S. and Europe. Earlier research using latitude estimates of these cities has indicated that each continent has several subjective regions (Friedman & Brown, 2000a). Participants judged cities from ...

Organized efforts to reduce the burden of malaria are as old as human societies. Understanding the historical relationships between humankind and malaria is important for natural and social scientists studying the disease, as well as policy makers trying to control it. Malaria once extended widely throughout the old world, reaching as far north as 64oN latitude and as far south as 32oS latitude...

The state’s astounding variety of biotic communities with their diverse collections of plants and animals is examined in this chapter. The living laboratory we call California is so enormous and biologically diverse that the study of it poses some problems: Where do we start? How do we organize our study? How do we classify the various living environments? Of course, these same problems confron...

When releasing data to the public, data stewards are ethically and often legally obligated to protect the confidentiality of data subjects' identities and sensitive attributes. They also strive to release data that are informative for a wide range of secondary analyses. Achieving both objectives is particularly challenging when data stewards seek to release highly resolved geographical informat...

Trypanosoma cruzi, the agent of Chagas’ disease, is highly persistent in blood collected and stored in blood banks (I, 2). Indeed, transfusions constitute the second most important avenue of Chagas’ disease transmission in Chile, the most important being provided by the man-biting insect vector Triatoma infestans. The specific area endemic for Chagas’ disease in Chile covers roughly the norther...

This study focused on a pulsating aurora event associated with morphological changes in Fennoscandia the early morning March 7, 2017. A high-speed sampling all-sky camera captured equatorward development of auroral patch association substorm centered over Greenland/North America region. Of particular interest this is interconnection between intensity and cosmic noise absorption (CNA) derived fr...