Geographic Literacy

Declining geographic literacy in the hyper-information age is a curious paradox. It may also spell trouble for our over-used planet. This post starts to look at this issue in more detail.

On the Flip Side

Have you ever wondered who or what is on the other side of the planet? This post takes a look at what is straight down and upside down. It also ponders the Earth's strange antipodal balance.

The Shadow Knows

The size of the Earth was calculated with surprising accuracy by Eratosthenes in the second century BC. His method was both brilliant and simple. This article describes a classroom experiment for repeating his results.