We need to reduce our exposure to artificial light and reduce our brain activity.

It's made of biodegradable plastic and charged by natural and artificial light.

The lack of artificial light there is so total that the stars at night blaze like fireworks.

People who work at display screens regularly can be affected by glare from sunlight or artificial light.

All windows are triple glazed, and the south-facing facade has large glass sections that let in daylight and keep the need for artificial light to a minimum.