NPR's Scott Simon talks with political commentator Charlie Sykes about the killing of conservative activist Charlie Kirk and its effect on political discourse.

A suspect has been arrested in Utah in the killing of Charlie Kirk. He was shot Wednesday during an event at Utah Valley University after answering a student's question about gun violence. At a press ...

41,000 years ago, Earth's magnetic field weakened dramatically. This period, known as the Laschamps excursion, may have unexpectedly influenced life on Earth. A collaboration between archaeologists ...