Learn how forces deep underground generate a protective bubble between us and space.

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

Sea turtles navigate using Earth's magnetic field like a GPS. Scientists found they learn and remember magnetic locations.

Loggerhead sea turtles do an excited "turtle dance" when anticipating food. It's adorable, of course, but it has also allowed scientists to understand better how the turtles navigate. Scientists have theorized that sea turtles memorize coordinates to navigate using a magnetic "map.