Not all minds are wired the same. Some people can instantly recognize hidden details, while others get tricked by illusions.

A recent systematic review and meta-analysis suggests that more exposure to fluoride may be linked to lower intelligence ...

I received an email with a chart that supposedly ranks the intelligence quotients of U.S. presidents, along with the claim that President-elect Donald Trump would ...

Optical illusions with hidden images have fascinated and puzzled people for centuries. These visual tricks challenge the ...