When autumn falls

Ice Nucleating Particle Concentrations Increase When Leaves Fall in Autumn

Ice nucleating particles active at −8 ◦C or warmer (INP−8) are produced by plants and by microorganisms living from and on them. Laboratory studies have shown that large numbers of INP−8 are produced by decaying leaves. At three widely dispersed locations in Northwestern Eurasia, we saw, from an analysis of PM10 filter samples, that seasonal median concentrations of INP−8 in the boundary layer ...

When the patient falls out of bed, who pays?

When a Psychometric Advance Falls in the Forest

Borsboom (2006) attacks psychologists for failing to incorporate psychometric advances in their work, discusses factors that contribute to this regrettable situation, and offers suggestions for ameliorating it. This commentary applauds Borsboom for calling the field to task on this issue and notes additional problems in the field regarding measurement that he could add to his critique. It also ...

Autumn spring.

artists; signatures and monograms, an international directory. Castagno, John. Scarecrow Pr., ©2007 567 p. $225.00 Castagno, a multimedia artist and sculptor and author of other books in the Artists’ Signatures and Monograms series, presents a reference for identifying, authenticating, and verifying signatures and works of wellknown and little-known abstract artists. About 2,300 painters, print...

, Autumn 2013