Imagine you are looking at a manhole cover a few paces away on the street. It looks circular, but this is because of some impressive perceptual machinery in your mind. The pattern of light in your eye ...

image: While humans have three color cones in the retina sensitive to red, green and blue light, birds have a fourth color cone that can detect ultraviolet light. A research team led by Princeton's ...

Scientists studying the aging process in the eye have made an important discovery around the role of a so-called "youth" protein, and shown how it promotes a cellular recycling process that maintains ...

With our free press under threat and federal funding for public media gone, your support matters more than ever. Help keep the LAist newsroom strong, become a monthly member or increase your support ...

First they built a pair of custom "bird vision" LED tubes programmed to display a broad range of colors, including nonspectral colors like ultraviolet+green. Next they performed experiments in an ...

The film explores the properties of light, including reflection and refraction, through various experiments. It demonstrates how light travels in straight lines, how mirrors can reflect images, and ...

A Harvard University neurobiology lab is under fire for conducting brain and vision experiments on baby monkeys, the latest in a string of efforts by animal welfare groups to shut down tests they view ...