Fingernails on a chalkboard? Nope. Rubbing a balloon? Uh-uh. Screeching tires? Not even. Researchers at the University of Newcastle in the U.K. have brutalised the eardrums of 16 subjects to try and find out what sound agitates humans the most.
Beyond being one of the greatest scientists to have ever lived, Richard Feynman revelled in challenging the received notions and flawed assumptions that underpin most of our understandings about how the world is put together.
It was a secret that followed George Harrison to his grave: what exactly was the opening chord to The Beatles' song "A Hard Day's Night"? Perhaps no four seconds of music have ever received such scrutiny.