Fun fact: The hexagon is the most common shape in nature. The hexagons in this image are in the eye of a dragonfly. Each hexagonal rod, called an ommatidium, contains major structures that have ...

Some species of dragonfly have more than 28,000 lenses per compound eye, a greater number than any other living creature. And with eyes covering almost their entire head, they have nearly 360-degree ...

While we have three main light-sensitive proteins (called opsins) one each for blue, green and red which help us see colour, ...