Tornado ratings from the 1950s into the early 1970s were based almost entirely upon remote, post-event review of media articles and photographs (Schaefer and Edwards 1998). Starting in the middle 1970s, local National Weather Service (NWS) offices have assigned F-scale ratings to most tornadoes based on a blend of f irst-hand surveys by their meteorologists and anecdotal evidence from news medi...

Corporate criminal liability puts a serious challenge to the economic theory of enforcement. Are corporate crimes different from other crimes? Are these crimes best deterred by punishing individuals, punishing corporations, or both? What is optimal structure of sanctions? Should corporate liability be criminal or civil? This paper has two major contributions to the literature. First, it provide...

Since the tragic events at Columbine High School in April 1999, the terms “active shooter” and “active shooter on campus” have become part of the language of law enforcement, public and private school systems, and the news media. Following the mass shooting at Virginia Polytechnic Institute and State University (Virginia Tech) in April 2007, the term “active shooter” quickly became part of the ...

Waste electrical and electronic equipment (WEEE) has been one of the fastest growing waste streams worldwide. Effective and efficient management and treatment of WEEE has become a global problem. As one of the world's largest electronic products manufacturing and consumption countries, China plays a key role in the material life cycle of electrical and electronic equipment. Over the past 20 yea...

Precipitous declines in Africa's native fauna and flora are recognized, but few comprehensive records of these changes have been compiled. Here, we present population trends for African elephants in the 6,213,000 km² Sudano-Sahelian range of West and Central Africa assessed through the analysis of aerial and ground surveys conducted over the past 4 decades. These surveys are focused on the best...

OBJECTIVE To determine whether national drug control laws ensure that opioid drugs are available for medical and scientific purposes, as intended by the 1972 Protocol amendment to the 1961 Single Convention on Narcotic Drugs. METHODS The authors examined whether the text of a convenience sample of drug laws from 15 countries: (i) acknowledged that opioid drugs are indispensable for the relief...

OBJECTIVE To understand associations of punitive policies to the population prevalence of injection drug users and to HIV seroprevalence among injectors. DESIGN AND METHODS A lagged-cross-sectional analysis of metropolitan statistical area data. Estimates of drug injectors per capita and of HIV seroprevalence among injectors in 89 large US metropolitan areas were regressed on three measures o...