The Earth's Core

Recorded at the Crossed Wires Festival in Sheffield, Misha Glenny and guests discuss Casablanca, one of the greatest films from Hollywood’s Golden Era. The film stars Humphrey Bogart and Ingrid Bergman and features the unforgettable song As Time Goes By. Casablanca opened in Nove ...  Show more

Dark Matter is a proposed form of matter that does not absorb, reflect or emit light. It is known to make up 27% of our universe, while the matter that makes up stars and galaxies accounts for only 5%. In this archive episode, first released in March 2015, Melvyn Bragg and his gu ...  Show more

What happens if Earth’s core is slowing? Neil deGrasse Tyson and comedian Chuck Nice explore the spinning of Earth’s core, the physics of tire pressure, and the science of toast.

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Life on Earth depends on the planet’s natural shielding, otherwise solar and cosmic radiation would ravage our small blue world. In this episode of Stuff to Blow Your Mind, sponsored by the National Geographic Channel’s series 'One Strange Rock,' Robert Lamb and Joe McCormick ...

Much like the plot of the 2003 disaster film, The Core, the rotation of Earth’s inner core is changing. But unlike the movie, this change is very subtle. What exactly makes up the Earth’s core? And how significant is its rotation change? Swarthmore College Professor of Astronomy ...  Show more