This month on Hari Ini Dalam Sejarah Dunia, Umapagan Ampikaipakan tells four stories surrounding four remarkable events that took place in January. About how the city of London came to be lit by gas, about Victor Lustig - the world's greatest conman, about Shostakovich's 7th Symphony and the Siege of Leningrad, and about the physicist Richard Feynman and the tragic end of the Space Shuttle Challenger.