Patients who have had a stroke in the back of the brain are at greater risk of having another within two years if blood flow to the region is diminished, according to results of a multicenter study.

Concern about gene flow from crops to wild relatives has become widespread with the increasing cultivation of transgenic crops. Possible consequences of such gene flow include genetic assimilation, ...

An abstract $\omega$-limit set for a flow is an invariant set which is conjugate to the $\omega$-limit set of a point. This paper shows that an abstract $\omega$-limit set is precisely a connected, ...

Human mobility and activity patterns mediate contagion on many levels, including the spatial spread of infectious diseases, diffusion of rumours, and emergence of consensus. These patterns however are ...

96% of squamous cell carcinoma (SCC) recurrences occurred within 2 years after cutaneous tumor excision. Size of primary tumor, anatomical location of primary tumor, and depth of margin from clearance ...

Most residents of the Island of Hawaii live on one of four potentially active volcanoes and probably have wondered about the threat of lava flows at one time or another. Interestingly, determining ...