What: New research suggests Uranus’s moon Ariel once hosted, or may still contain, a deep subsurface ocean beneath its icy crust. Guests: Planetary scientist Dr. Ca ...

The Jefferson Memorial glows in soft golden light. Its marble columns rise from the edge of the Tidal Basin, their reflection ...

Abstract: With the rapid development of urban underground rail vehicles, subway positioning, which plays a fundamental role in the traffic navigation and collision avoidance systems, has become a ...

In Arizona's Willcox Basin, just over an hour east of Tucson, fissures are tearing through the earth, wells are running dry, ...