The human brain is naturally mathematical. But there’s one particular kind of math people have surprisingly strong feelings about — geometry. It's the secret sauce of mathematics — different from everything else, and applicable to everything from gerrymandering to human evolution to romance novels.

Original Air Date: May 28, 2022

Interviews In This Hour:
The 14th dimension, AI that writes romance novels, and other things explained by geometry — Did shapes make us human?

Guests:
Jordan Ellenberg, Stanislas Dehaene

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It’s summer, and you might be pulling out your binoculars, filling your bird feeders, and looking up as you hear a melodious song. But for many birdwatchers, it's not just a simple pastime. Identifying bird calls, tracking rare breeds through marshes and waters, and watching our feathered friends as they watch you has turned into true love of birds — an avian obsession.

Original Air Date: June 17, 2023

Interviews In This Hour:
'Utterly unlike other birds': The inscrutable brilliance of owls — Mark Obmascik on Competitive Bird Watching — The Indelible Myth and Meaning of Ravens — Christopher Benfey on 'A Summer of Hummingbirds'

Guests:
Jennifer Ackerman, Mark Obmascik, Charles Monroe-Kane, Christopher Benfey

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Maybe it’s your grandmother’s cinnamon cookies, the garlicky tomato sauce your spouse cooked when you were first dating, or the chicken noodle soup you made every week when your kids were little. The sights, smells and tastes of certain foods can instantly remind us of a person or transport us back to a certain time in our lives. In this episode, we’ll meet kitchen ghosts from Kentucky, hear how religion and food are intertwined, and talk about how flavor evokes emotion – from grief to joy.

Original Air Date: May 25, 2024

Interviews In This Hour:
The comfort and community of ancestral food — Slow down and take a 'flavor trip' — The perfect french fries of Kewaunee, Wisconsin — The surprising intersections of food and faith

Guests:
Crystal Wilkinson, Aimee Nezhukumatathil, Christina Ward, Joe Hardtke

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