The pope’s embrace of literature and history is a sharp contrast to some of his predecessors, a medievalist explains.

In 1611, Johannes Kepler improved on Galileo's design by making one simple change. He replaced the concave lens with a second convex one. As a result, the light rays converge as they exit the ...

Its authors include astronomer Johannes Kepler and Galileo, as well as philosophers across centuries, from Erasmus and René Descartes to feminist Simone de Beauvoir and existentialist Jean-Paul ...