Tommy Orange — author of 2019 PEN/Hemingway Award winner “There, There” — says he wasn't much of a reader in his early years. But a chance encounter with an absurd, experimental novel by John Kennedy Toole showed him a path to writing a novel that was truly his own.

Do you know what an earthquake sounds like? Geophysicist Ben Holtzman collects recordings from around the world — from the Fukushima disaster to the manmade earthquakes caused by fracking. We hear examples of these seismic rumbles.

Jill Heinerth nearly died when she was trapped by ocean currents inside an Antarctic iceberg. She's one of the world's most accomplished underwater cave divers, often exploring caves no one's ever been in, which show her "the veins of the Earth."