Garner conducted an experiment to see whether studying a person's pupils (the centers of their eyes) was a good indicator of ...

In fact, many bats, nocturnal snakes and lizards have no cones at all ... this return trip passes out of the eye the same way it came in—through the pupil. The presence of the tapetum can ...

Concepts are explained using songs and smells, and answers are taken by technology that follows pupils' eyes. It is part of a survey by commissioner Rocio Cifuentes to identify issues to address ...