Maangchi's career was born when her son suggested she start making videos of herself cooking Korean dishes.
Almost 25 years have passed since the town of Halabja in northern Iraq suffered the worst chemical weapons attack ever perpetrated against a civilian population.
At least 5,000 people are thought to have died in what is now seen as a campaign of genocide launched by Saddam Hussein against the Iraqi Kurds.
The BBC’s world affairs editor John Simpson was one of the first international journalists to reach Halabja in 1988, and he went back to meet some of the survivors.
Peter O’Dowd follows the route of Abraham Lincoln's funeral train 150 years ago, to look at modern-day race relations and Lincoln's legacy.