weather pattern. In February, the US National Oceanic and Atmospheric Administration (NOAA) warned in its routine forecasts that the bleaching observed in the Pacific last year may be the start of a third global catastrophe for coral reefs. And this time, it cannot be blamed on El Niño. It is simply down to the general warming of the oceans, which in 2014 reached the highest average temperature...

Paediatrician and pioneer of perinatal medicine. Born in Birmingham, UK, on June 23, 1929, he died Bristol, Feb 2, 2021, aged 91 years. When paediatrician Peter Dunn retired from clinical work at the University 1988, did so as Emeritus Professor Perinatal Medicine. It was a title had not only earned but could be said to have invented. “His key contribution [to medicine] lay linking staff lookin...

The semantic valuations of classical logic, strong Kleene logic, the logic of paradox and the logic of first-degree entailment, all respect the Dunn conditions: we call them Dunn logics. In this paper, we study the interpolation properties of the Dunn logics and extensions of these logics to more expressive languages. We do so by relying on the Dunncalculus, a signed tableau calculus whose rule...

D ow n The bright colors of birds are often attributed to sexual selection on males, but in many species both sexes are colorful and it has been long debated whether sexual selection can also explain this variation. We show that most evolutionary transitions in color have been toward similar plumage in both sexes, and the color of both sexes (for example, bright or dull) was associated with ind...

PURPOSE The present work describes how vocabulary ability as assessed by 3 different forms of the Peabody Picture Vocabulary Test (PPVT; Dunn & Dunn, 1997) can be placed on a common latent metric through item response theory (IRT) modeling, by which valid comparisons of ability between samples or over time can then be made. METHOD Responses from 2,625 cases in a longitudinal study of 697 pers...