Kim Ritter on MSN1y
6 Free Printable Zebra Coloring Pages
Zebra's stripes can often be different temperatures ... and we have lots of fun new printable sheets to color coming your way ...
Solving a mystery in vision science: Zebrafish study shows how retinal cells maintain spacing needed for optimal vision
In vertebrate retinas, specialized photoreceptors responsible for color vision (cone cells) arrange themselves in patterns ...