Glass of the future

Glass window high rises are a signature style of modern architecture. But they are often not the most eco-friendly of buildings when it comes to keeping them warm or cool. Now a Spanish company has come up with a way to transform windows into self-regulating heating and cooling systems, using the sun as a power source.

Glass window high rises are a signature style of modern architecture. But they are often not the most eco-friendly of buildings when it comes to keeping them warm or cool.
Now a Spanish company has  come up with a way to transform windows into self-regulating heating and cooling systems, using the sun as a power source.