Color perception is an ancient and active philosophical problem. It’s an instance of the wider category of sensory perception, but since the color spectrum fits on a single line (unlike, say, touch ...

This story is part of a series on the current progression in Regenerative Medicine. This piece is part of a series dedicated to the eye and improvements in restoring vision. In 1999, I defined ...

On a flight from New York City to Berlin, the route map might look a little curious: the shortest path between these two cities is surely a straight line, and yet the flight path curves distinctly, ...