Bob and Tim are discussing the job that they are about to start. They are at a residence and the system has a blown low-voltage fuse. Tim said, “Let’s just change the fuse and try it and see if the ...

A short circuit is serving as a nuisance to scientists operating the Phoenix Mars Lander. The problem is in a device used to analyze ice and soil dug up from the Martian ground. The short was found ...

The track circuit at the center of last month's deadly Red Line crash has been intermittently malfunctioning for the past 18 months, when a key piece of equipment was replaced by Metro crews, federal ...