Raven Windows News Today

>> how much energy do you save by doing something like that? >> you can save up to about 30% depending on -- it depends on a lot of different factor, the size of the building, the location of the building, the climate that its in, the amount of glass you have in the building. but 30% is a good number. >> thanks for the demo. wil mccarthy with his raven windows. head to their site to check it out for yourself. we have pictures of the largest star ever discovered in the history of mankind. it is...