EPFL scientists have developed a new technique that lets researchers watch, with unprecedented sensitivity, how materials emit polarized light over time.

Experts discuss what it might mean if you get a faint line on a home COVID-19 test, when to take another test and what precautions to take.

It might surprise you to know that the world's longest light rail line is located here in the U.S. in the state of California. Here's what and where it is.

The A Line was already the longest light-rail line in the world, going from Azusa to Pasadena, Chinatown, downtown Los Angeles and Long Beach — about 48.5 miles.

Valley Metro’s light rail line is expanding in a big way starting next month. Riders will see changes impacting how they ride, when, and where.

Light the Line foundation hosted a holiday fundraiser Saturday to support the Chicago Police Department in honor of fallen CPD Officer Ella French.

After delays forced years of construction, Valley Metro officially unveiled the new South Central light rail extension in south Phoenix on June 7.

From rerouted bus lines to massive park-and-ride garages and a multi-use trail, light rail riders in Lynnwood, Mountlake Terrace and Shoreline have many options.

NJ Transit has agreed to become the “Agency of Record” for the $2 billion, two-decade old effort to build a light-rail line from Glassboro to Camden. “In order to complete Preliminary ...

How Jenny Holzer Questions Today’s Truths in Her Soon-to-Close Show at the Guggenheim In her thirty-year career, the artist has tackled some of the most pressing issues of our time while ...

There will be light rail cars running on a mile-long track of the Purple Line in Maryland as “dynamic testing” begins.