Marcus Feld

Marcus Feld is a science writer with a background in earth science. He explains the physics and geology hiding in plain sight — the colour of the sky, the shape of a valley — for readers who never thought of themselves as science people.

Articles by Marcus Feld

Science & Nature

How Rivers Shape the Land: The Slow Engineering Beneath Our Feet

From carving deep canyons to building fertile deltas, rivers are among the planet's most patient and powerful sculptors, and their work touches nearly every human settlement.

Science & Nature

Why the Sky Changes Colour: The Everyday Physics of Light and Air

The blue of noon, the fire of sunset and the grey of a storm all come down to how tiny particles in the air bend and scatter sunlight.