Chris Potter-Walker

Scene from the Romance of Lancelot of the Lake. Artist: Gautier

A scene from a movie.

The print collector

According to a new estimate, nine in 10 medieval manuscripts telling tales of chivalry and heroism have been lost to time.

The volume of medieval literature in the genre of narrative fiction that once existed was studied by Katarzyna Anna Kapitan and Daniel Sawyer at the University of Oxford and their colleagues from around Europe. The stories of King Arthur and Lancelot are included in these texts.

Ecologists can use an unseen species model to estimate biological diversity after surveying an area. Chances are that the survey won't uncover all of the species in the area, but the model can use the number of observed species and their abundances to estimate how many additional species are present.