One of the pioneering spirits of protein crystallography has passed away. Professor Louise Napier Johnson, DBE, FRS, died on 25 September 2012, the day before her 72nd birthday. Throughout her career Louise was a leading figure, applying an incisive physics intelligence to problems in biology. Many years later she assumed leadership roles at Oxford University and at the Diamond synchrotron in O...

A study of the process, e+e---) e+e-7, where at least one electron scatters at a small angle is presented. Calculations of the process to order o3 and cr4 are reviewed and compared with data from the PEP storage ring. An analysis of data from the Mark II detector shows good agreement with the order cx4 calculation for e7 final states. Preliminary results from the ASP detector agree well with th...

The Epistemic Objection says that certain theories of time (like the “growing block” and “moving spotlight”) imply that it is impossible to know which time is absolutely present. Standard presentations of the Epistemic Objection are elliptical—and some of the most natural premises one might fill in to complete the argument end up leading to radical skepticism. But there is a way of filling in t...

the neil and louise Tillotson Fund of the new Hampshire charitable Foundation. Family Demographer The carsey institute university of new Hampshire

In a Perspective, Collins Iwuji and Marie-Louise Newell discuss early findings from Richard Hayes and colleagues' PopART study on HIV testing and treatment.