If you are well rested and full, your brain tells you that a bruised overripe apple is a piece of subpar fruit to be passed over. However, if you are exhausted and hungry, an overripe apple is categorized as much-needed food. But how is the brain able to categorize that same apple in these situations? On this episode of The Quanta Podcast, co-host Hannah Waters speaks with contributing writer Conor Feehly about how the brain manages to categorize similar sets of sensory signals in radically different ways. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, hear the people behind the award-winning publication navigate through some of the most important and mind-expanding questions in science and math.

Why are only 10% of people left-handed? Geneticists, developmental biologists, neuroscientists, and evolutionary biologists have all sought explanations, resulting in an astronomical amount of research into the mystery of handedness. No one has put all the pieces together yet, but over the last few years, some major new clues have emerged. On this episode of The Quanta Podcast, host Hannah Waters speaks with writer Natalie Wolchover and traces these new clues to uncover the mystery of human handedness. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, Quanta Magazine editor in chief Samir Patel and Senior Editor Hannah Waters speak with the people behind the award-winning publication to navigate through some of the most important and mind-expanding questions in science and math.

Volcano forecasting can save countless lives. But most of the time warnings are more like educated guesses. How close are we to forecasting volcano behavior the way we forecast the weather? On this episode of The Quanta Podcast, host Hannah Waters speaks with writer and volcano expert Robin George Andrews about just how close we are to accurately forecasting volcanic eruptions. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, Quanta Magazine editor in chief Samir Patel and Senior Editor Hannah Waters speak with the people behind the award-winning publication to navigate through some of the most important and mind-expanding questions in science and math.

Thunderstorms have captivated humanity for millennia, and yet their inner workings remain deeply mysterious. On this episode of The Quanta Podcast, guest host and Quanta senior editor Hannah Waters speaks with staff writer Charlie Wood about the new technologies that are helping physicists better understand the phenomena. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, Quanta Magazine editor in chief Samir Patel speaks with the people behind the award-winning publication to navigate through some of the most important and mind-expanding questions in science and math. At the end of the episode, listen to an excerpt of the fourth movement of Beethoven’s Sixth Symphony, which depicts a violent thunderstorm. Piccolo represents lightning and timpani represents thunder. Courtesy of Symphony Orchestra. Deed – Attribution-NonCommercial-ShareAlike 3.0 Unported – Creative Commons

Most mathematicians take the notion of infinity for granted — it’s deeply rooted in math’s most fundamental assumptions. But a small group of researchers hopes to banish infinity completely. On this episode of The Quanta Podcast, host Samir Patel speaks with math editor Jordana Cepelewicz about the philosophy of ultrafinitism. This topic was covered in a recent story for Quanta Magazine. Each week on The Quanta Podcast, Quanta Magazine editor in chief Samir Patel speaks with the people behind the award-winning publication to navigate through some of the most important and mind-expanding questions in science and math. Audio coda music & lyrics by Michael Tilson Thomas. Vocals performed by Ben Jones. Piano performed by John Wilson.