This week, see what makes loggerhead sea turtles “dance,” track a cosmic “ghost particle,” uncover an ancient basilica, and more.

University of Southern California scientists have made a groundbreaking discovery about the nature of the Earth’s enigmatic inner core, revealing for the first time that this 1,500-mile-wide ...

The Earth's inner core, long considered a solid and stable sphere, may be quite different. A recent study suggests that its ...