"Olo can be described as the 'greenest green,' though it can never be captured by a camera. But its development tells us a lot about our color vision."

From the daily newsletter: What would it be like to see an entirely new color? A handful of researchers don’t have to wonder.

"Olo can be described as the 'greenest green,' though it can never be captured by a camera. But its development tells us a lot about our color vision."