In his most explicitly pro-life speech to date, Pope Leo demands an end to abortion and surrogacy globally. Editor's Note: ...

This video explores a core artistic principle often associated with Leonardo da Vinci and how it applies to modern painting.

Scientists have uncovered a new explanation for how swimming bacteria change direction, providing fresh insight into one of ...

Humans respond to environments that change at many different speeds. A video game player, for example, reacts to on-screen ...