Korea's 17th-century text 'Jibong Yuseol' records that chili peppers were introduced from Japan, while Japan's 'Yamato Honzō' claims seeds were brought back from Korea during Hideyoshi's invasion. Both countries believe chili peppers came from the other.

In 1976, ten bright lights appeared in formation over Seoul. The military fired anti-aircraft guns, but the lights drifted away unscathed. Stray rounds killed one civilian and injured 31. Officials blamed a US cargo plane, but many questions remain unanswered.

Close one eye, extend your thumb to align with a distant object, then switch eyes. The object appears to shift. Multiply that apparent shift by 10 to get the actual distance. This works because the ratio between your eyes and your arm length is roughly 1:10.

South Korea's National Treasure No. 904 is an ancient Greek bronze helmet. Meant for 1936 Berlin Olympics marathon winner Son Ki-jung, the IOC refused to deliver it. It reached him 50 years later in 1986, and he donated it to the nation.

Submerging your face in cold water triggers the "diving reflex." Heart rate drops 10-25% and blood flow shifts to protect the brain and heart. This ancient mammalian reflex is especially strong in babies under six months.