Green Home Blog
FEBRUARY 21, 2012
Recycling Glass. What is Glass? Glass is made by heating silica – usually in the form of sand – with lime and soda. Glass has been around for thousands of years. Naturally occurring glass from lightning and volcanoes was used for tool making during the Stone Age, and manufactured glass first appeared in Egypt around 3000 BCE. Because of its density, glass makes up a high percentage of household waste by weight. Recycling Glass.