Dollar General offers budget-friendly versions of a lot of popular items, including solar-powered lights, but are these cheap ...

Boston will test whether giving BPS buses longer green lights and shorter stoplights will aid in getting more students to ...

In the capital, Metro lines A, B, and C were cancelled and trams on the right bank stopped in the middle of the road. ...

The control system for Solar powered LED Road traffic sign was designed. This system consists of 4 parts: energy transformation unit, energy charging unit, energy discharging unit and control unit. It ...

The system will flash a light into the face of drivers to warn them that someone is walking through the intersection.

Environmentalists, along with some politicians and their allies, argue that fossil fuel and nuclear power are being ...

Craig Rucker: "In the United States, a sudden outage disrupted Memorial Day weekend celebrations for families across southeastern Louisiana as power demand surged during the hottest part of the day." ...

Street lights erase the shadows where attackers once hid. Noisy, polluting diesel generators have gone silent. New businesses ...

A Republican plan heading to a vote in the Senate would quickly end incentives for clean energy and impose new taxes on some ...