As the fires that ravaged Los Angeles in January ebbed, many trees were left standing next to burnt down homes. Here’s why.

Colour is an illusion, not part of the real world We think of colour as being a fundamental property of objects in life: green trees, blue sky, red apples. But that’s not how it works.

The few clouds in the sky couldn’t keep the sun from beaming on Paradise Lake on Tuesday, covering the water with diamonds.