Our earwax could help prove our identity and even reveal what we’ve eaten and where we’ve been, researchers have discovered. Scientists from the Monell Center say the substance could even reveal information about our sexual orientation and health. They say new tests could be developed to prove people’s ID—and their ethnicity could be determined simply by looking in their ear. “Our previous research has shown that underarm odors can convey a great deal of information about an individual, including personal identity, gender, sexual orientation, and health status,” said study senior author George Preti, Ph.D, an organic chemist at Monell. “We...