Energy, Environment, and Smart Systems

Babbage: LEDtime

The latest light & health study by Rensselaer Professor Mariana Figueiro of the Lighting Research Center is presented in this audio piece that was featured on the homepage of

Screen time can mess with the body's 'clock'

For a good night’s sleep, here is some expert advice: Turn off, turn in and drop off. Anyone who does the opposite — say, turning on an iPad or other similar electronic reader in bed — may have a harder time both dropping off to sleep and shaking that groggy feeling the next morning. That’s the conclusion of a new study. Lighting scientist Mariana Figueiro calls the study thorough. She also finds its results unsurprising. Her research has shown that spending even two hours on an iPad before bedtime can cut down the brain’s release of melatonin.

Overreaction or justified caution? New Yorkers question city's storm response

José Holguín-Veras, a professor of civil and environmental engineering at the Rensselaer Polytechnic Institute, said the response had been “on the cautious side”, but said that while putting the city effectively under house arrest might sound extreme, it was part of a calculation of risk. “What is worse: being cautious, or being quote-unquote optimistic and praying nothing bad will happen?” he said.



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