Sometimes, I feel like devoting an unreasonable amount of time to answering a question that nobody asked, such as:

The Topologist’s World Map

What would a map of just the world’s borders look like?


Are competing businesses attractive or repulsive?

The size of the Earth

Can you calculate the Earth’s radius by watching the sun rise?


What can you learn about a place’s topography using only weather radar?

Stellar etymology

Does the origin of a star’s name depend on where it is in the sky?

Shooting at a hurricane

Can you stop a hurricane by shooting at it?

Black hole score

How can you represent a binary black hole merger in the language of sheet music?