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Marium, an orphaned dugong cared for by biologists in southern Thailand, had what it takes to win over the internet; few could resist pictures and videos of the button-eyed mammal being fed sea grass and bottled milk and even cuddling her caregivers, all while seeming to wear a satisfied smile.

The shooting of six police officers in Philadelphia earlier this week has provoked the region's top federal prosecutor to take swipes at the city's district attorney.

Earlier this month, Margie Reckard, 63, was gunned down along with 21 others in the El Paso, Texas, massacre that authorities believe was driven by racial hatred. Two weeks later, strangers amassed by the hundreds to honor Reckard and surround her widower, Antonio Basco.

Fresh Air Weekend highlights some of the best interviews and reviews from past weeks, and new program elements specially paced for weekends. Our weekend show emphasizes interviews with writers, filmmakers, actors and musicians, and often includes excerpts from live in-studio concerts. This week:

Colson Whitehead On The True Story Of Abuse And Injustice Behind 'Nickel Boys: Whitehead's new novel is based on a notorious Florida reform school where boys were beaten and sexually abused. "If there's one place like this, there are many," he says.

When is it wrong to show cigarette smoking on television, but OK to depict people smoking cannabis products, particularly in programming popular among young teenagers?