“Feel-Good Glass”

Designed to improve your mood:

Scientists at the Fraunhofer Institute for Silicate Research in Germany have invented a new type of window that is conceived to improve concentration, regulate sleep, and even make you happier. The so-called "feel-good glass" has a special .1-micrometer-thick inorganic coating that is optimized to transmit wavelengths between 450 and 500 nanometers, where the effects of blue light are most pronounced. Blue light is the part of the spectrum which promotes the balance of biorhythm-moderating hormones (and which traditional glass largely blocks). "The coating we’ve developed helps people to feel they can perform better and makes it less likely they will fall ill," Dr. Jörn Probst says.

Of course, you could soak up plenty of mood-enhancing light just by stepping outside. But given that Americans spend as much as 90% of their lives indoors, it makes perfect sense to welcome the healthiest aspects of the outdoors inside.