When the phone rings these days, the first thing many of us do is check the incoming number. Odds are it’s a spam call. Yudhijit Bhattacharjee is a contributing writer at National Geographic, and he joins host Krys Boyd to talk about his journey into the world of telemarketers and their phone mills selling dubious products. Plus, we’ll meet the real humans who hope you pick up and say “hello.” His article “Who’s Making All Those Scam Calls?” was published in The New York Times Magazine.