What Exactly Is Light Pollution?
When you think of pollution, the humble light bulb probably doesn’t come to mind. Instead, you might envisage smoke stacks belching clouds of smoke, or a sky heavy with smog. Keep those smoke stacks in mind, though – they do have something to do with light pollution. Humankind’s electrical illumination of the earth can be [...]
Process of Glass Recycling Explained
Glass is a fascinating material. It never loses all of its liquid properties, which is why very old glass windows are wavy. It can be recycled indefinitely, and it does not absorb tastes and stains. It is one of the oldest recyclable, man-made materials on Earth; ancient Egyptians made glass, and broken glass was melted [...]
