On this day in history January 30,
- 1979 – A Varig 707-323C freighter, flown by the same commander as Flight 820, disappears over the Pacific Ocean 30 minutes after taking off from Tokyo.
- 1982 – Richard Skrenta writes the first PC virus code, which is 400 lines long and disguised as an Apple boot program called “Elk Cloner“.
- 1989 – The American embassy in Kabul, Afghanistan closes.
- 1994 – Péter Lékó becomes the youngest chess grandmaster.
- 1995 – Workers from the National Institutes of Health announce the success of clinical trials testing the first preventive treatment for sickle-cell disease.