What is the nature of dark matter? A new experiment led by Columbia University physics professors aims to find out.

Susan Boynton looks at this, along with bibliophilia, libraries, and the study of medieval liturgy in her new book.

Liturgy of Empire examines the European reception of the neo-Mozarabic rite created under the patronage of the Archbishop of Toledo, Francisco Jimenez de Cisneros (1495-1517), in relation to the ...