By the 17th century, some prominent European scientists began to think differently about light.

Young's work sparked a new way of thinking about light.

But then again - heat is not the only energy form that comes from a flame - what about light.

Outsiders would have noticed and been curious about so much light in back of his house after dark.

The one about cold light, and possible ways of achieving it?

There are also cultural and economic reasons for concern about excessive light at night.

"I talk about light as if I came on earth just to play with it," he said.

Think about scale and form and light, even if you never had a design class in your life.

There was nothing evil about light; they lived by it still.

The man knows a thing or two about light.