Abstract: Energy-efficient coherent optics is emerging as a key solution to address the escalating communication demands of large-scale artificial intelligence (AI) and machine learning (ML) tasks.

Bob Bartizek's 40 x 70-foot Pennsylvania & Western RR in O scale (1:48, three-rail) depicts the PRR in western Pennsylvania.

Come along with CTT and Trains.com staff members, as they visit the Milwaukee Lionel Railroad Club in New Berlin, Wisconsin! In this video, you’ll see views of the enormous 30 x 54-foot O gauge ...

As the sector flourishes, a Rand Corp. look at student performance at 271 schools in all 50 states ran up against parents’ aversion to testing. Discovery Learners’ Academy in Chattanooga is among the ...