Add Yahoo as a preferred source to see more of our stories on Google. A close-up photograph of what appears to be a light-brown human eyeball shows the organ's expansive, cavernous depths surrounding ...

Since it began orbiting our cold neighbor in 2003, ESA's Mars Express has been busy studying the planet's geology and its climate. Over the years, the spacecraft has sent back countless breathtaking ...

Scientists have revived light-sensing neuron cells in organ donor eyes and restored communication between them as part of a series of discoveries that stand to transform brain and vision research.

A widely popular idea in psychology and evolutionary science suggests that the distinctive look of the human eye—particularly the white area surrounding the iris—evolved to help us communicate ...