LEDs are all the rage in lighting, but sometimes they don’t work very well. The Boston Globe reported today that PBS station WGBH’s "electronic mural" that entertains commuters on the Massachusetts Turnpike is being switched off until cooler weather in September. Apparently, the LEDs go dark when they get too warm. The mural displays photos of WGBH’s TV shows and was turned on last November as part of the station’s new $85 million headquarters.
The implementation of a new diesel fuel standard in the US has considerably improved the environmental performance of diesel vehicles. The Environmental Protection Agency (EPA) says that the new ultra-low sulfur diesel (ULSD) fuel has combined with other improved technologies to reduce diesel's particulate matter (PM) emissions by 99%.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.