View Full Profile. Learn about our Editorial Policies. Humans rely on sight, which is primarily mediated by three color-sensing cone types, to perceive the world in a kaleidoscope of hues. Blue cones ...

In this video, watch as blue and red cone-shaped sand pieces are sliced through with precision, creating a satisfying visual as they break apart smoothly. The contrasting colors and perfect cuts ...

Human cones can detect 3 colors: red, green, and blue. Dog cones can only detect 2 colors. No one is certain what those 2 colors are. Some experts think it could be blue and yellow. Alexandra ...