Trolleys and rail cars lined up next to each other at the 69th Street Transportation Center are patiently waiting for their next trips. (Cory Sharber/WHYY) From Philly and the Pa. suburbs to South ...

CityDig: The Trackless Trolleys of Laurel Canyon Los Angeles later earned its reputation as a car city, but in the early 20th century it was a laboratory for innovative transportation technologies. In ...

Multicellular systems are living organisms that are composed of numerous interacting cells. In synthetic biology, multicellularity allows some degree of modularity in the combination of elementary ...

The best way to get around Virginia Beach is by car, even though parking and summertime traffic can be tough. Most people drive to the area, but you could also fly into Norfolk International Airport ...

Machine learning is the ability of a machine to improve its performance based on previous results. Machine learning methods enable computers to learn without being explicitly programmed and have ...

Carla Tardi is a technical editor and digital content producer with 25+ years of experience at top-tier investment banks and money-management firms. David Kindness is a Certified Public Accountant ...

Both the main and second turning spindles operate at 4,000 rpm, while the compact milling spindle comes standard as 12,000 rpm (24 hp/22 kW) and 20,000 rpm (24 hp/22 kW) as optional. The machine ...