"I thought they enjoyed the experiment"—Science review for children who don't remember what they did by the following week

"I did an experiment in science class today," they said when they got home, and they talked all about it. Yet, when you look ...

Who is Aristotle? Thinking of Happiness as an 'Activity' Rather Than a 'Mood'

Aristotle (384–322 BC) was an ancient Greek philosopher who, after studying for about 20 years at Plato's Academy, conducted ...