Glass is made of sand, which is a kind of rock. But glass is transparent. We explore why! Glass is made of sand, which is a kind of rock. But glass is transparent, and rocks aren’t transparent. What’s ...

The best way to understand glass is to understand how it is made. The first step to make glass requires heating up a mixture of minerals – often soda ash, limestone and quartz sand – until they melt ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Windows are some of the biggest energy liabilities in modern buildings, yet they are also non‑negotiable for light, comfort, and design. A new class of clear materials promises to flip that equation, ...

Glass making dates back to ancient Mesopotamia, an astonishing 4,000 years ago. Known as “humankind’s most important material,” 1 glass is ubiquitous in our modern environment. It is used in the ...