Mason Posner teaches anatomy and physiology, marine and vertebrate biology at Ashland University in Ohio. He does research on the evolution and function of the vertebrate eye lens and has interests in undergraduate research and teaching technology. He leads a science communication capstone courses that teaches Biology majors how to develop science blogs
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Darwin and the eye

One of the most interesting sections of Darwin’s On the Origin of Species may be his struggles with perceived perfection in nature.  In Chapter 6 Darwin confronts the organ of which William Paley would be most proud – the remarkable eye, and wonders how such a structure could have possibly evolved through his [...]

Fish eyes do the coolest things

Ed Yong over at Not Exactly Rocket Science beat me to the punch on this one.  You should check out his summary of a new paper by a group of excellent fish eye people on the spookfish, Dolichopteryx longipes.  Like many mesopelagic fishes that live in these low light conditions, the spookfish has tubular [...]

Seeing with the ancient brain

We form our conscious sense of vision using the occipital lobe of our cerebrum, the uppermost portion of the brain that has increased in size during mammalian (and independently in bird) evolution.  Other vertebrates rely more heavily on other regions of the brain, especially the midbrain, to process sight.  We still use a [...]