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Color Vision Test

How well do you perceive color? Can you differentiate red and green shades and recognize nuances in color tones? Find out what level of color vision you use to see the world around you!

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How well do you perceive color? Can you differentiate red and green shades and recognize nuances in color tones? Find out what level of color vision you use to see the world around you!

Fact Lab

The game Operation was invented by a university student at the University of Illinois in 1962 as part of a class assignment to invent a toy or game. The patient in the game is named ‘Cavity Sam’.

Have you ever signed a postcard or a letter with an X to stand in for a kiss? The origins of this custom may date back to medieval times when people who couldn’t write used the X as their signature in front of a witness. To show their sincerity, the X was then kissed.

Dolphins can stay active for 15 days or more by sleeping with only one half of their brain at a time. The killer whale, also known as Orca, is actually a type of dolphin!

Fact Lab

The game Operation was invented by a university student at the University of Illinois in 1962 as part of a class assignment to invent a toy or game. The patient in the game is named ‘Cavity Sam’.

Dolphins can stay active for 15 days or more by sleeping with only one half of their brain at a time. The killer whale, also known as Orca, is actually a type of dolphin!