Photos show colorful algae blooms are turning glaciers pink, purple, and green across the planet. Aristotle first wrote about "blood snow." The glacier algae is probably a vestige of the Ice Age .

Aristotle (right) and Plato (left) in Raphael’s ‘The School of Athens’ Photo: Godong/Getty Images. Happiness seems to be in short supply today, with acrimony, ...

He defended slavery and opposed the notion of human equality. But he is not our enemy. By Agnes Callard Ms. Callard is a philosopher and professor. The Greek philosopher Aristotle did not merely ...