Discover tips to prevent water leaks in sliding glass doors. Learn maintenance techniques and weatherproofing methods to ...

A couple of years ago, we installed new, dual-pane windows throughout our 100-year-old house. I’d never had them before, so I ...

Scientists have found a way to achieve negative refraction—where light bends the "wrong" way—using carefully arranged atomic arrays instead of engineered metamaterials. This breakthrough has enormous ...

Look more closely, though, and it’s easy to tell the difference. What is crystal? Crystal is a type of glass made with lead ...