Eyes are so complex that some say natural selection couldn’t possibly be how they formed. So, how did eyes evolve?
These Eye Floaters Live Inside You! ►►►►
Get Awesome DNews Science Shirts! ►►►►
Sign Up For The TestTube Newsletter Here ►►►►
Read More:
How the Eye Evolved
“If you look at the different sort of eyes out in the natural world and consider the ways in which they could have evolved, Darwin realized, the absurdity disappears. The objection that the human eye couldn’t possibly have evolved, he wrote, ‘can hardly be considered real.’”
Diverse eyes
“The human eye, on the other hand, relies on more machinery. We have a lens and cornea, which help focus light, and a mobile iris, which controls the amount of light entering the eye much like a shutter on a camera. The many light-sensing cells at the back of our eyeballs form a structure called the retina, which collects information that the brain can assemble into an image. Many different animals have this sort of single-lens, image-forming eye.”
____________________
DNews is dedicated to satisfying your curiosity and to bringing you mind-bending stories & perspectives you won’t find anywhere else! New videos twice daily.
Watch More DNews on TestTube
Subscribe now!
DNews on
Trace Dominguez on
Julia Wilde on
DNews on
DNews on Google+
Discovery News
Download the TestTube App:
Sign Up For The TestTube Mailing List:
