As It Happens: Tuesday Edition

Part One
BC fentanyl dad
A father in British Columbia warns about about the dangers of fentanyl, after his teenage son dies while using the painkiller to get high.
Rio: Amnesty International
Amnesty International says that, in the run-up to the Rio Olympics, police have killed more than 1,500 people in the city -- and argues that little is being done to hold them to account.
Nova Scotia whale rescue
Our very own Carol Off calls in from Cape Breton after joining a community effort to rescue a group of sixteen stranded pilot whales.
Part Two
Chris Hyndman obit
Cher Jones mourns the sudden death of her friend and colleague, the co-host of CBC's Steven and Chris Show, Chris Hyndman.
Longest polar bear dive
An Arctic guide witnesses the longest-known polar bear dive, but says the feat was an act of desperation made necessary by shrinking sea ice.