After 10 years I think my absence of a mathematical education has finally come to hurt me in a programming setting. I need to calculate the distance between two points on Earth using a Great Circle ...

Social media is flooded with posts that claim to prove the Earth is flat. A recent example is a post that claims a photo of Chicago taken from Indiana demonstrates the Earth's flatness. “If the earth ...

Imagine the Earth in your mind’s eye. Now round up all the water on the planet into a sphere (we’re talking oceans, icecaps, atmosphere, everything — even the water bound up in you and me). How big do ...