What the Eye Tells the Brain
Light illuminates our surroundings and ensures that we can see fine details, recognize faces, discriminate ripe blackberries from those that need a little bit...
Vision
Human vision is a masterpiece: we can see in bright sunlight all the way down to dim starlight (this is called photopic-, mesopic-, and...
How does light work?
Light is a powerful antidepressant and is also the most powerful known zeitgeber (time-setter) for the internal biological clocks of the body.
Surprisingly,...
The long-term evolution of light sensitivity from single-cell organisms to humans: What we are missing now
Evolutionary biologists assume that life arose in the earth's oceans about 3.5 billion years ago. About a billion years later,...
