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 ...

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 ...

Dairy Queen's Free Cone Day is back for 2025 to usher in the first day of spring. Here's how to get your free ice cream treat on March 20.