How I Managed to Design the Most Successful Educational Computer Game of All Time

Is a Virus a Living Creature?

To most people, it seems self-evident that a virus is some kind of living creature. We usually put viruses…

Trees and Carbon Dioxide: What Is the True Connection?

A Day Is Not 24 Hours

Our system of telling time is based on the premise that every day is exactly 24 hours long — quite precisely, with no…

The 5 Senses, or Maybe 7, Probably 9, Perhaps 11

Word Connections: Sun, Moon, & Stars

Throughout human history, people have been fascinated with the sun, the moon, and the stars. So…

Word Connections: Breakfast, Lunch, & Dinner

In this episode of Word Connections, we look at the words we use to identify the…

There Is More to a Rainbow than Meets the Eye

In this episode of the Philipendium, we examine the hidden mysteries of rainbows…

The 10 Most Repressive Countries in the World — and the 10 Most Free

How Many Kinds of Living Things Are There?

For anyone who loves nature, the sheer diversity of life on Earth is breathtaking…