In the past few decades, Americans have been eating more and sleeping less, and some researchers now suspect that there may be a connection. A number of cross-sectional and longitudinal cohort studies have suggested that chronic sleep deprivation is associated with an increased risk of obesity. 1-4It is thought that sleep deprivation may promote weight gain by altering sympathetic nervous syste...

DISPERSAL INTO NEWLY EMERGING ENVIRONMENTS CAN INCREASE SPECIES DIVERSIFICATION RATE Accelerated rates of net diversifi cation (speciation minus extinction) have oft en been associated with the appearance of a novel morphological character, or key innovation, that allows a group of organisms to use a niche in a new way. Recently, an alternative mechanism, dispersifi cation (dispersal and divers...

It is for me a great pleasure to host on this issue of AMPS QT Prof. Massimo Pagani, a personal friend and an inspiring figure from the very early days of my career when I was working on my thesis at the Politecnico of Milan. Since then, we built a creative research relationship that continued through the years and that is still productive, with direct impact on all AMPS technology that relates...