Smithsonian researcher Sarah Johnson studies bison specimens to understand how the species’s genetic diversity changed after its decline ...

A newly published study from the University of Guam sheds light on a tiny but powerful ally in the soil and how it could help ...

Package implements functions useful in prospective planning and monitoring of a clinical trial when a recurrent event endpoint is to be assessed by Lin, Wei, Yang, and Ying (2010) model. The equations ...