People around the world are mourning the death of the supercentenarian -- who started his remarkable career as a runner in his eighties. 

Excavation begins at the site of one of Ireland's former mother-and-baby homes -- where hundreds of infants were buried in an unmarked grave. And our guest helped bring the truth to light. 

A data leak put thousands of Afghans at risk, including many who worked with British forces. But journalists weren't allowed to talk about a secret resettlement -- until today. 

An evolutionary biologist talks about discovering two warring species of ants living peacefully within the same plant in Fiji -- and says it's the plant that makes it work.

For two decades now, a dentist in Seattle has been getting emails meant for the Tooth Fairy. She tells us about the love and worry in those notes -- and how she responds.

As It Happens, the Tuesday Edition. Radio with a strong molar compass.