How do friendships change as we get older? Should you join a bowling league? And is Angela more important to Mike than Mike is to Angela?

What’s the difference between people who preserve special things and people who devour them right away? Why do we love to binge-watch? And did Adam really eat an apple?

Why does time fly when you’re having fun? How do you teach rats to play hide and seek? And what does all this have to do with Anne Boleyn?

Is it enough to toss a soda can in the recycling? Why is Maria obsessed with Nobel Prize lectures? And wait — is that a news alert or a tiger?

Should you visualize success or failure? How do you bounce back from a mistake? And will Maria hustle Angela into a poker game?

Are highly effective people quicker to share credit? What does poverty do to your brain? And how did Stephen's mother teach him about opportunity costs? Plus: an announcement about the future of the show.

We asked you to nominate the worst sins of the modern age. Which one do Stephen and Angela think belongs on the list? And which does Angie struggle with the most?

What does the Seven Deadly Sins survey tell us about the people who listen to this podcast? Are we more afflicted by sloth or by lust? And what does Angela mutter under her breath? Take the Seven Deadly Sins survey: freakonomics.com/nsq-sins/

Is pride an emotion? Where’s the line between self-esteem and hubris? And what does Stephen have against peacocks? Take the Seven Deadly Sins survey: freakonomics.com/nsq-sins/

Who’s greedier — gamblers or casinos? What’s the difference between betting on sports and entering a charity raffle? And does Angela know the name of her city’s football team? Take the Seven Deadly Sins survey: freakonomics.com/nsq-sins/

What does social media do to our self-esteem? How is envy affecting our politics? And should you go to your high school reunion? Take the Seven Deadly Sins survey: freakonomics.com/nsq-sins/

What’s the difference between anger and indignation? What’s Angela’s problem with turkey sandwiches? And why wasn’t a "No Stupid Questions" listener angry at the men who assaulted him? Take the Seven Deadly Sins survey: freakonomics.com/nsq-sins/

Are we too busy watching Friends? Is porn driving us apart? And why did New Yorkers stop vacationing in the Catskills? Take the Seven Deadly Sins survey: freakonomics.com/nsq-sins/

Is your favorite treat changing your brain? Why do so many snacks melt in your mouth? And why can’t Stephen replicate his favorite salad dressing? Take the Seven Deadly Sins survey: freakonomics.com/nsq-sins/

How can we distinguish between laziness and patience? Why do people do crossword puzzles? And how is Angie like a combination of a quantum computer and a Sherman tank? Take the Seven Deadly Sins survey: freakonomics.com/nsq-sins/

Birthdays! Why do Americans prefer Thanksgiving and the Fourth of July to theirs? Why do they make Stephen think of molasses and chicken feed? And is “Happy Birthday” the worst song ever written?

How far would you go to extend your life? What’s the best way to stay sharp as your brain ages? And does Keith Richards deserve a Nobel Prize?

What’s the connection between conversations about money and financial literacy? Could the taboo against talking about your salary be fading? And why did Angie’s teenage daughter call Vanguard to learn about I.R.A.s?

Are those travelers on their laptops just showing off? Why does V8 taste better at 35,000 feet? And why won't Angela chat with her seatmate?

Are things as dire as they seem? How big is your moral circle? And should Angela spend time with her kids or answer her emails?