Optical illusions are interesting visual phenomena that deceive the brain into seeing something differently from what is real ...

This optical illusion eye test challenges you to spot the hidden letter E among a sea of number 3s. A tricky brain teaser, it tests your observation skills and cognitive ability. Optical illusions ...

The ocean covers nearly three-quarters of our planet but scientists say we have barely scratched the surface of what lives in ...

Like straight out of Julio Verne's Journey to the Center of the Earth, scientists from Northwestern University and the ...