As It Happens: Wednesday Edition

Part One

Greektown Shooting: Guns
A police source tells CBC that the gun used by the Toronto shooter was illegally acquired and it might have come from the U.S. We'll ask a criminal defence lawyer about how easy it is to get a gun on the city's streets.

Mars Water
After more than a century of investigation, scientists have found a huge, sub-glacial body of water on Mars -- and, potentially, another clue in the search for the alien life aquatic. 

Duck + Ducklings
An amateur photographer from Minnesota tells us how he got a viral shot of a single female duck -- followed by a flotilla of six dozen ducklings. 

Part Two

Sergio Marchionne Obit
Life gave him cars that were considered lemons. But the late auto executive Sergio Marchionne jump-started Fiat Chrysler, and saved the company -- and our guest tells us what drove him. 

Laos Dam 
When a hydroelectric dam project collapses in Laos, entire villages are submerged by the torrent -- and two days later, hundreds of people are still missing.