The recent report of a binary companion to the progenitor of supernova 1993J may provide important clues for identifying the nature of the nascent compact object. Given the estimates of the progenitor mass, the potential power source is probably a pulsar rather than an accreting black hole. If there is a pulsar, one would expect the rotational luminosity to be stored and reprocessed by the supe...

It seems like a day does not go by in the United States without hearing about immigration on televised news broadcasts, print news stories, radio talk shows, or Internet blogs. Immigration, more specifically “illegal immigration,” is a hot topic in the U.S., perhaps fueled by the fact that 2008 is a presidential election year. Furthermore, since the issue of illegal immigration tends to divide ...

Penile intraepithelial neoplasia (PIN) is a clinically well known condition. However, its diagnosis is often difficult. We present four cases of PIN, seen in our department. Various histological patterns ranging from PIN I to PIN III were noted in these cases.

Judges in the United States, the United Kingdom, and Canada have ruled that witnesses may not wear the niqab-a type of face veil-when testifying, in part because they believed that it was necessary to see a person's face to detect deception (Muhammad v. Enterprise Rent-A-Car, 2006; R. v. N. S., 2010; The Queen v. D(R), 2013). In two studies, we used conventional research methods and safeguards ...

According to the no-signaling theorem, the nonlocal collapse of the wavefunction of an entangled particle by the measurement on its twin particle at a remote location cannot be used to send useful information. Given that experiments on nonlocal correlations continue to have loopholes, we propose the stronger principle that the nonlocality of quantum mechanics itself is veiled. In practical term...