This note revisits the role of migrant social networks as determinants of bilateral-migration flows. We do so using a new database that covers about 190 world countries and features more accurate estimates of bilateral flows than those employed so far. Our battery of gravitymodel exercises show that the impact of social networks is consistent and significant over different specifications, and i...

Relatively little information has been published on Coyotes in the eastern United States, particularly in the mid-Atlantic region, the last area of the contiguous US to be colonized by Coyotes. Increases in eastern Coyote distribution and abundance have been documented, and concerns about their impact on wildlife and livestock are growing. Information from published and unpublished manuscripts,...

This paper asks under what conditions it is possible for a wildlife department in west Africa without an external budget to protect all rare and endangered species, and if so, what is the impact on rural inhabitants engaged in hunting. Protecting wildlife in this region is particularly tricky. Hunting is important for rural livelihoods, but when unregulated can result in the loss of species. Go...

CONTEXT As of 2015, more than 23 million scuba diver certifications have been issued across the globe. Given the popularity of scuba diving, it is incumbent on every physician to know and understand the specific medical hazards and conditions associated with scuba diving. EVIDENCE ACQUISITION Sources were obtained from PubMed, MEDLINE, and EBSCO databases from 1956 onward and ranged from dive...

The paper identifies and discusses two major themes in wilderness social science. First, that wilderness studies (and its advocates) have been limited by an ontological tension between those who mainly approach the relationship between humans and nature on the basis of material factors and constraints and those who approach it through an examination of shifting concepts and ideas. Rather than p...

Wilderness medicine courses tend to teach similar topics, but they can differ with respect to philosophy, teaching methods, and financing. Our not-for-profit course is academically based and is similar to other programs with regard to presentations of didactic material and outdoor training, but there are also important differences in teaching methodology that are not used by other programs to d...